Prague is a city of culture and even during the winter months, especially in January, you can get rid of the winter blues by dressing up and enjoying yourself at a concert, opera performance or ballet.  There are many theaters and concert halls in Prague but here are the websites of some of the larger venues:

Hybernia Theater – www.hybernia.eu/

National Theater – https://www.narodni-divadlo.cz/en

O2 Arena – https://www.o2arena.cz/en/

Municipal House – www.obecnidum.cz/en/

Forum Karlin – https://www.forumkarlin.cz/index/en

Vinohrady Theater – https://www.divadlonavinohradech.com/