National Polytechnic Museum

One of the largest in Europe.

Holy Masses: Sa 17:30 & Su 10:30 in Bulgarian; 12:00 in Latin; 18:00 Bulgarian

A bridge over the Vladayska River near the central train station.

Beautiful yet simple Ottoman-mosque. Built by Mimar Sinan. It's active and there is a guide inside.

Museum of the history of Sofia itself, housed in the colourful old building of the Central Mineral [Water] Baths (built 1913). Exhibits include many luxurious items formerly belonging to Bulgaria's last monarchs.