Serdica Archaeological Complex
Sofia
The Serdica Archaeological Complex in Sofia is the largest open-air Roman archaeological site in the city center, showcasing the remains of the ancient city of Serdica, which dates back to Roman times. The complex includes well-preserved sections of the city's eastern gate, defensive walls, thermal baths, streets, houses, and public buildings uncovered during metro construction between 2010 and 2012. Serdica was an important Roman municipium and regional capital, known for its rich history including the issuance of the Edict of Serdica, which legalized Christianity in 311 AD. The site reveals the urban layout with a forum, administrative buildings such as the bouleuterion and praetorium, and remnants of a small single-nave church richly decorated with frescoes. Visitors can walk along the original Roman streets with authentic paving and see colorful mosaics and hypocaust heating systems. The complex integrates archaeological heritage with modern urban life and serves as a cultural and communicative space, emphasizing Serdica's significance as a political, economic, and religious center in antiquity.
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Tip: Visit during spring and early autumn to enjoy mild weather and avoid peak tourist crowds. Purchase tickets in advance online to skip lines. Check the official website for guided tour schedules and possible combined tickets with other Sofia History Museum sites. Discounts are available for students, seniors, and groups. Wear comfortable shoes as the complex includes walking on uneven ancient pavements.
Interesting facts
- •Serdica was the birthplace of Roman emperors Aurelian and Galerius.
- •The Edict of Serdica (311 AD) was the first Roman decree legalizing Christianity, preceding the Edict of Milan by two years.
- •The complex includes remains of the Roman forum, bouleuterion (city council building), and praetorium (administrative headquarters).
- •Excavations revealed eight horrea (warehouses) indicating Serdica's role as a regional supply center connected to the Danube.
- •The ancient streets and mosaics are integrated into a modern urban setting, allowing visitors to walk on authentic Roman pavements.
History
Serdica was originally a Celtic settlement named after the Serdi tribe and was conquered by the Romans around 29 BC.
It became a municipium under Emperor Trajan and flourished as a regional capital with significant urban development including defensive walls built under Marcus Aurelius between 176-180 AD.
The city was a notable center for early Christianity, with the Edict of Serdica issued in 311 AD granting conditional religious tolerance.
Serdica suffered destruction from Gothic raids in 268 and later from Hunnic invasions in 447 but was rebuilt by Byzantine Emperor Justinian in the 6th century.
Over centuries, the city evolved through Roman and Byzantine periods, leaving rich archaeological remains that are now preserved in the complex.
Place Guide
Eastern Gate and Defensive Walls176-180 AD
Partially preserved eastern city gate and sections of the defensive walls built under Marcus Aurelius between 176-180 AD, marked by inscriptions above the gates.
Roman Forum and Public Buildings2nd-3rd century AD
The forum was the social and political center of Serdica, including the bouleuterion (city council hall) and praetorium (administrative building) uncovered beneath modern structures.
Thermal BathsEarly 2nd century AD
Ruins of Roman thermal baths utilizing natural mineral springs, likely built in the early 2nd century AD near the present-day Sofia Mineral Baths.
Ancient Streets and Mosaics2nd-3rd century AD
Original Roman streets with authentic paving stones (Decumanus Maximus) and colorful mosaics exposed for visitors to walk along and admire.
Small Single-Nave Church16th-19th century
Remains of a small single-nave church from the 16th-19th century with richly painted frescoes, including a protasis and diaconicon on either side of the apse.
Contact
Phone: 02 981 1618
