Remains of ancient town coming from the 1st century have been uncovered quite recently. Visit a place with a historical atmosphere!
More information http://visit.guide-bulgaria.com/a/506/ulpia_serdica_fortress.htm
Address 1 булевард Княз Александър Дондуков, София 1000, Bulgaria
Coordinates 42°41'51.558" N 23°19'23.869" E