Bishop's Basilica of Philippopolis

Worth a detour

The largest early Christian church excavated in Bulgaria, and the floor is why you come — roughly two thousand square metres of mosaic, birds and geometry, laid in two layers because an earthquake sank the first one and the next generation simply tiled over it. The shelter built in 2021 lets you walk the nave at floor level and then read the whole plan from a gallery above. Allow an hour.

Story

Background

Philippopolis got its bishop's church almost as soon as it was legal to build one. A coin of Licinius, who ruled until 324, turned up in the foundations, which puts the first building within a decade or two of the edict of toleration in 313 — early enough to be among the first generation of large churches anywhere in the empire. It was built to a size that says something about the city: about 36 metres across and over 90 long, a nave with two aisles, an apse, a narthex and a colonnaded courtyard in front.

The floors were relaid more than once. Mosaicists worked here in three campaigns producing two distinct layers, and where the upper floor has been lifted you can see the earlier one beneath it. The repertoire is birds above all — dozens of them, including the peacock in the narthex that has become the site's emblem — set into borders of knots, meanders and coloured geometry. There is no figural narrative and no scripture in pictures; this is a church that decorated its floor the way a rich Roman house did.

The site lay exposed and deteriorating for decades. The building now standing over it opened in April 2021 and is a genuinely good piece of museum design: a roof, a raised walkway that keeps feet off the tesserae, and an upper level from which the whole plan reads at once. It is on the tentative list for World Heritage, not inscribed.