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Rotunda of St George, Sofia, part of Serdica's Roman baths · Wikimedia Commons
Rotunda of St George (Serdica Baths)
BathThracia · Presidency courtyard, Dondukov Boulevard, Sofia, BulgariaBuilt 300 CE
Not standing in 117 CE
About
Constantine's building program raised this domed red-brick hall as part of a Roman bath complex in the early 4th century, making it the oldest standing building in Sofia today. It later hosted sessions of the Council of Serdica in 343 CE after conversion to a church. Nothing about it predates Hadrian's accession, let alone Trajan's death in 117 CE.
Sources
Nearby
Roman Maps shows the empire frozen at 11 August 117 CE, the day Trajan died — its moment of greatest territorial extent. Explore the full map →

