Originally Posted by
eefor jfp
As mentioned, the cathedrals are nice and there is an archaeological museum. Affordable national theater (opera & ballet) in season. Vitosha mountain has great views over the city and decent skiing in the winter. Plovdiv, one of Bulgaria's historical capitals and the 2019 European capital of culture, is about a two hour drive.
You read my mind

I am going for three days as part of a TP run \ BA Holiday.
Tour is booked to Plovdiv, Vitosha will be ascended by the cable car, staying at the Hilton which is right in the middle of the main museum district and next to the theatre (although there is nothing I want to see on when I am there).
I'll book a few nice meals while I am there and bobs your uncle. (Or Uncle Bulgaria if you prefer).