Start with the recent excavation works at the Ancient Serdica Complex and then pay a visit to nearby Sofia History Museum. Afterwards, walk over to Sofia’s most impressive sight, the Aleksander Nevski Cathedral. Don’t miss the Sveta Sofia Church next door with its subterranean necropolis. Enjoy a traditional Bulgarian dinner at kitschy (but in a good way) Manastirska Magernitsa.
Follow the above itinerary, but on the second day admire the treasures on show at the Archaeological Museum, and take the opportunity to watch the changing of the guard at the neighbouring President's Building and to visit tiny Sveti Georgi Rotunda. Art-lovers will want to see the National Gallery Quadrat 500. On the final day, head out to Boyana to see the National Museum of History and lovely Boyana Church.