This is the remains of the ancient Roman city of Serdica. This is under the current city.
This is the Church of St Petka of the Saddlers. It was built in the Middle Ages. It is still in use, and there were church services going on when we were there (both times), so I didn't go into the sanctuary, but it is a very interesting building right in the middle of Sofia.
And here is my little guy, in my favorite picture of him at the orphanage. He was so little!