The city now called Sofia was established in 5 BC or earlier, under the name of Serdica and gained much importance over the centuries due to its central positioning in the balkan region. Over the course of time it was under the reign of the Romans, the Ottomans, the Huns,… just to name a few.
This is the Church of St. George, build by the Romans in the 4th century. There had been some debate on social media about whether or not this was disrespectful towards the believers. The priest however just walked by us as we were in full action and didn’t mind.