The oldest chapel in the whole building, which was built in Middle Ages is now used by the Boys' Choir. Don't expect to be able to come here for their concert though - the singing is a part of a weekly mass. Even if you're not religious, you should consider visiting this place just to enjoy the ambience and listen to the choir.
Mon-Tue: 10 a.m. - 2 p.m.
Friday: 11 a.m. - 1 p.m.
Masses: every Sunday from the middle of September to the end of June at 9:15 a.m.
Prices for different seat categories:
37€ / 27€ / 17€ / 11€
Wikipedia https://es.wikipedia.org/wiki/Hofburgkapelle
Official Website https://www.hofmusikkapelle.gv.at/
Phone +1 533–9927
Address Hofburg, Schweizer Hof, Vienna, A-1010, Austria
Coordinates 48°12'23.732" N 16°21'57.36" E