Amorium

Quick Summary: Amorium (modern Hisarköy, near Emirdağ, Afyonkarahisar) was one of the most strategically important cities in Byzantine Anatolia, serving as the capital of the Anatolikon Theme — the largest and most prestigious military province in the empire. Located at the crossroads of major military roads in central Phrygia, Amorium was Byzantium's primary bulwark against the Arab-Muslim armies that repeatedly invaded Anatolia from the 7th to 9th centuries. The city's dramatic fall to Caliph al-Mu'tasim in 838 AD — one of the most famous sieges in Byzantine history — became legendary and was immortalised in both Byzantine and Arabic literature. Covering over 65 hectares with an Upper City (citadel) and vast Lower City enclosed by 3 km of walls, Amorium preserves traces of seven civilisations: Hittite, Phrygian, Greek, Roman, Byzantine, Seljuk, and Ottoman. Systematic excavations since 1988 (Oxford University, later Anadolu University) have revealed churches, fortifications, workshops, and a remarkable Byzantine granary containing wheat-filled storage jars (pithoi) from the 9th century.

• Why Amorium Matters
• Geography and Setting
• Historical Timeline
• The Sack of 838 and the Forty-Two Martyrs
• City Layout and Fortifications
• The Byzantine Granary
• Churches and Religious Life
• The Anatolikon Theme
• Archaeological Excavations
• Visitor Information
• Frequently Asked Questions
• Sources and Further Reading

Why Amorium Matters

Amorium is significant for several compelling reasons:

Byzantine military capital: As capital of the Anatolikon Theme, Amorium was the command centre for the empire's most important military province. The Anatolikon Theme covered the heart of Anatolia and was the first line of defence against Arab invasions.

The Siege of 838: The fall of Amorium to Caliph al-Mu'tasim is one of the most documented events in Byzantine-Arab warfare. The siege, betrayal, and destruction of the city became a turning point in the struggle for Anatolia.

The Forty-Two Martyrs: The execution of 42 captive Amorian officers in Samarra (Iraq) in 845 AD, after they refused to convert to Islam, became one of the most celebrated martyrdom narratives in the Orthodox Christian tradition.

Multi-period habitation: The site spans from the Early Bronze Age (c. 2000 BC) through the Ottoman period, with particularly rich Byzantine-era remains.

Archaeological innovation: The Oxford-led excavations (1988–2009) and subsequent Turkish campaigns have employed cutting-edge methodology, including extensive geophysical survey, that have revealed the city's layout without destroying it.

Geography and Setting

Amorium is located at Hisarköy village, approximately 13 km east of Emirdağ, in Afyonkarahisar Province. The site sits on the central Anatolian plateau at an elevation of approximately 1,000 metres.

Strategic Position

Amorium's importance derived from its location at the junction of major Roman and Byzantine military roads:

• The road from Constantinople through Dorylaeum (Eskişehir) to the eastern frontier
• The road from Ancyra (Ankara) southwest to the Aegean coast
• Routes south to Iconium (Konya) and on to the Cilician Gates and Syria

This crossroads position made Amorium the key to controlling central Anatolia — whoever held Amorium controlled movement between the capital and the eastern provinces.

Landscape

• Flat steppe terrain of the central Anatolian plateau
• Continental climate — cold winters, hot dry summers
• Agricultural land (grain cultivation) surrounding the site
• The Upper City occupies a prehistoric settlement mound (höyük) rising above the plain
• The Lower City extends across a broad, relatively flat area

Historical Timeline

Bronze Age and Hittite Period (c. 2000–1200 BC)

The settlement mound (höyük) that forms the Upper City shows habitation from the Early Bronze Age. During the Hittite period, the area was part of the western Hittite frontier zone.

Phrygian Period (c. 1200–700 BC)

Following the collapse of the Hittite Empire, the region became part of the Phrygian kingdom. Amorium lay within the Phrygian cultural sphere, between the Phrygian capital Gordion and the western territories.

Greek and Roman Period (c. 700 BC – 395 AD)

• The Hellenistic city developed after Alexander's conquests
• Under Roman rule, Amorium was a modest provincial city in Phrygia
• The city minted its own coins during the Roman period
• Christianity arrived early — Amorium was already a bishopric by the 4th century AD

Early Byzantine Period (395–7th century)

Amorium grew in importance as the Byzantine Empire faced mounting threats:

• The construction of the Lower City walls (late 5th century) enclosed over 65 hectares — indicating a major urban centre
• Multiple churches were built during the 5th–6th centuries
• The city became the seat of the strategos (military governor) of the Anatolikon Theme

Arab-Byzantine Wars (7th–9th centuries)

This was Amorium's period of greatest strategic importance:

• Repeated Arab raids into Anatolia from the Umayyad and Abbasid caliphates targeted the city
• Amorium was attacked in 644, 646, 669, 716, and on multiple other occasions
• The city's defences were repeatedly damaged and rebuilt
• Despite these assaults, Amorium held — until 838

The Sack of 838

The catastrophic fall to Caliph al-Mu'tasim's army (see detailed section below).

Post-838 Recovery

• Amorium was partially rebuilt after 838 but never regained its former importance
• The city gradually declined during the 9th–11th centuries
• Seljuk Turks took the region after the Battle of Manzikert (1071)
• Small-scale Ottoman settlement continued at Hisarköy village

The Sack of 838 and the Forty-Two Martyrs

The siege and destruction of Amorium in August 838 is one of the most dramatic events in Byzantine history:

Background

Caliph al-Mu'tasim of the Abbasid Caliphate launched a massive campaign specifically targeting Amorium. His motivation was partly strategic (destroying Byzantium's main Anatolian stronghold) and partly personal — the Byzantine Emperor Theophilos had sacked the caliph's birthplace of Sozopetra, and al-Mu'tasim swore revenge.

The Campaign

• Al-Mu'tasim assembled an army of reportedly 200,000 soldiers (likely an exaggeration, but certainly one of the largest Arab armies to invade Anatolia)
• The army advanced in two columns — one through Ancyra, one directly to Amorium
• Emperor Theophilos attempted to intercept but was defeated at the Battle of Dazimon (July 838)

The Siege

• The siege began on 1 August 838 and lasted approximately two weeks
• The city's massive walls resisted direct assault
• A traitor — a Byzantine commander named Boiditzes who had converted to Islam — revealed the weakest point in the walls to the attackers
• On 12 or 15 August, the Arabs breached the walls at the point indicated by the traitor
• The city was sacked and largely destroyed; much of the population was killed or enslaved

The Forty-Two Martyrs

• Among the captives were 42 senior military officers taken to the Abbasid capital of Samarra (Iraq)
• After seven years of imprisonment, they were offered freedom if they converted to Islam
• All 42 refused and were executed on 6 March 845
• The Orthodox Church commemorates them as the Forty-Two Martyrs of Amorium (feast day: 6 March)
• Their story became one of the most important hagiographic narratives in Byzantine Christianity

City Layout and Fortifications

The Upper City (Citadel)

• Occupies a prehistoric settlement mound (höyük)
• Highest point of the site, with commanding views
• Fortified with walls and towers throughout the Byzantine period
• Contains remains of administrative buildings and possibly the military headquarters of the Anatolikon Theme
• Archaeological trenches have revealed multi-period stratification from the Bronze Age to the medieval period

The Lower City

• Vast enclosed area of over 65 hectares (160 acres)
• Surrounded by a wall circuit approximately 3 km in length
• The walls were constructed no earlier than the late 5th century
• Included semicircular and rectangular towers at intervals
• Gates at multiple points provided access to the major roads
• Inside: residential quarters, workshops, churches, public buildings, and the granary complex

Wall Construction

The Lower City walls represent a major investment in Byzantine military engineering:

• Rubble-core construction with cut stone facing
• Wall thickness: approximately 2.5–3 metres
• Towers projecting beyond the wall line to allow flanking fire
• The walls were repaired and strengthened multiple times — evidence of the repeated Arab attacks

The Byzantine Granary

One of the most remarkable archaeological discoveries at Amorium:

• A large granary building dating to the 9th century (shortly before or after the 838 sack)
• Contained 11 pithoi (large ceramic storage jars) still filled with carbonised wheat
• The pithoi were found in situ, exactly where they had been when the building was destroyed
• The carbonisation of the wheat was caused by the fire that destroyed the city during the 838 siege
• This discovery provides invaluable evidence for Byzantine agricultural practices, food storage, and urban provisioning
• The granary's size suggests it was a state or military supply depot rather than a private store — consistent with Amorium's role as a major military base

Churches and Religious Life

Multiple church buildings have been identified at Amorium:

The Lower City Church

• A large basilica in the Lower City
• Multi-period construction with several rebuilding phases
• Contained marble architectural decoration and possible mosaic fragments
• Served the civilian population of the Lower City

The Upper City Chapel

• A smaller religious structure on the citadel mound
• May have served the military garrison

Episcopal Significance

• Amorium was an episcopal see (bishop's seat) from at least the 4th century
• In the ecclesiastical hierarchy, Amorium was a suffragan of Pessinus, later elevated in importance
• The city's bishops attended major church councils

The Iconoclasm Connection

During the Byzantine Iconoclasm controversy (726–843), Amorium played a notable role:

• The Amorian dynasty of Byzantine emperors (820–867) — including Michael II and Theophilos — originated from Amorium
• Michael II (r. 820–829), founder of the dynasty, was born in Amorium
• The Amorian emperors generally supported iconoclasm (opposition to religious images), making the city's connection to this theological controversy significant

The Anatolikon Theme

Understanding Amorium requires understanding the theme system — the Byzantine Empire's military-administrative structure:

• After the Arab conquests of the 7th century destroyed the old provincial system, Byzantium reorganised its remaining territory into themes — combined military-civilian provinces
• The Anatolikon Theme (from Greek Anatolikón, "Eastern") covered central Anatolia — roughly modern Afyon, Konya, and Eskişehir provinces
• It was the largest and most prestigious theme in the empire
• The commander (strategos) of the Anatolikon was one of the most powerful officials in the state
• Amorium, as the theme capital, housed the headquarters, troops, and military infrastructure for defending the heartland of Anatolia
• The theme system made Amorium a target — destroying the theme capital would cripple Byzantine defensive capacity in the region

Archaeological Excavations

Martin Harrison and Oxford University (1988–2009)

• Professor Martin Harrison (University of Oxford) initiated systematic excavations in 1988 after a preliminary survey in 1987
• The Oxford team focused on both the Upper and Lower Cities
• Major discoveries included the Lower City Church, fortification systems, and industrial areas
• Harrison's death in 1992 was followed by continuation under Chris Lightfoot (Metropolitan Museum of Art, New York)
• The excavations established Amorium's significance in Byzantine archaeology

Anadolu University (2014–present)

• After more than 20 years of British-led work, Turkish excavations resumed in 2014
• Directed by Zeliha Demirel Gökalp of Anadolu University (Eskişehir)
• Key discoveries include the Byzantine granary with 11 pithoi, a Turkish-Islamic period bath, and additional fortification sections
• Geophysical surveys have revealed the full extent of the Lower City layout

Visitor Information

Location: Hisarköy village, approximately 13 km east of Emirdağ, Afyonkarahisar Province.

Getting There: By car from Afyonkarahisar (approximately 1 hour east). From Emirdağ, follow signs to Hisarköy. No regular public transport directly to the site.

Current Status: The site is partially open to visitors. Active excavation areas may be restricted during the digging season (summer).

Duration: 1–2 hours for the visible remains.

Combined Visits:

• Afyonkarahisar — the hilltop castle, Ulu Camii, and thermal spas
• Gordion — the Phrygian capital and Midas Tumulus (150 km northeast)
• Eskişehir — Odunpazarı historic quarter and museums

Tips:

• The Upper City mound provides the best overview of the site
• The central Anatolian plateau can be extremely hot in summer and cold in winter — spring and autumn visits are ideal
• Bring water and sun protection
• The site is extensive — comfortable walking shoes recommended

Frequently Asked Questions

What was Amorium? A major Byzantine city in central Anatolia that served as the capital of the Anatolikon Theme — Byzantium's most important military province. It was the empire's main stronghold against Arab invasions.

What happened in 838? Caliph al-Mu'tasim's army besieged and sacked Amorium after a traitor revealed a weak point in the walls. The destruction was one of the most devastating events in Byzantine history.

Who were the Forty-Two Martyrs? 42 Amorian military officers captured in 838, imprisoned in Samarra for seven years, then executed in 845 for refusing to convert to Islam. They are saints in the Orthodox Church.

What has been found in excavations? Churches, fortifications, workshops, and a 9th-century granary containing 11 large storage jars still filled with carbonised wheat — a remarkable preservation of Byzantine daily life.

Is it worth visiting? For Byzantine history enthusiasts, yes. The site's strategic importance and dramatic history make it a compelling destination, though the visible remains are less monumental than coastal sites.

Amorium's Coinage and Civic Identity

Amorium minted coins over a long period, providing valuable evidence for the city's self-image:

• Roman period coins (2nd–3rd centuries AD) show various deities, including Zeus, Artemis, and Tyche (the city's protective goddess)
• Some coins depict the city walls and towers — a proud reference to Amorium's defensive strength
• The variety of coin types indicates a prosperous and self-confident civic community
• Coin evidence helps date building phases and confirm the city's administrative status
• The cessation of coin minting in the mid-3rd century reflects the broader economic crisis that affected the Roman Empire

Excavation Chronology and Key Discoveries

The following table documents the full timeline of archaeological investigation at Amorium, one of the longest-running excavation projects in Turkish Byzantine archaeology:

The Lower City Church: Construction Phases and Material Evidence

The Lower City Church at Amorium is one of the most thoroughly documented Byzantine churches in central Anatolia. Excavation revealed multiple construction phases spanning five centuries:

The 10th-11th century Phase 4 produced the richest material finds. Tombs added during this period contained remarkably well-preserved silk textiles, leather shoes, pendant crosses, and jewellery -- evidence of the piety, wealth, and cultural sophistication of Amorium's inhabitants even after the catastrophic 838 sack.

The Amorian Dynasty: Imperial Coins and Amorium's Legacy

Amorium's greatest contribution to Byzantine history was the Amorian dynasty (820-867), which produced three emperors. The following table catalogues the principal coin types associated with this dynasty:

Michael II was born in Amorium and rose through the military ranks before seizing the throne in 820. His dynasty's connection to Amorium made the city symbolically important to the empire -- which partly explains why Caliph al-Mu'tasim specifically targeted it in 838. The destruction of the dynasty's home city was intended as a personal humiliation of Emperor Theophilos (Michael II's son and successor).

Material Culture from the Lower City Enclosure

The 12,327 m2 Lower City Enclosure, excavated systematically from 1996 to 2008, produced an extraordinary range of material culture:

The discovery of dichroic glass at Amorium is particularly noteworthy. This type of glass, which appears one colour in reflected light and another in transmitted light, was previously unknown in Byzantine contexts. The fragments suggest either local production of luxury glass or access to high-end trade networks connecting Amorium to major manufacturing centres.

Sources and Further Reading

• Chris Lightfoot, "Amorium: A Byzantine City in Anatolia" (Metropolitan Museum of Art)
• The Byzantine City of Amorium -- Metropolitan Museum of Art, Heilbrunn Timeline
• Martin Harrison, Mountain and Plain: From the Lycian Coast to the Phrygian Plateau in the Late Roman and Early Byzantine Period (1998)
• Eric A. Ivison, "Amorium in the Byzantine Dark Ages" -- excavation reports
• AMORIUM REPORTS 3: The Lower City Enclosure Finds Reports and Technical Studies (Cambridge)
• The Amorium Excavations Project -- Dumbarton Oaks
• Zeliha Demirel Gokalp, "Recent Excavations at Amorium" (Anadolu University, 2014-)
• Daily Sabah, "Byzantine Granary Found in Ancient City of Amorium" (2020)
• Ancient Pages, "Byzantine Granary With 11 Pithoi Found at Amorium" (2020)