All year round party at the ruined pubs in Budapest: see their list on ruinpubs.com

These hidden courtyards and abandoned houses are located in the very center of Budapest.  Ecclectic and funky design, reasonably priced drinks, easygoing crowd all week long. Everyone speaks English.

Spa parties, aka sparties at Szechenyi Baths in Budapest

Colourful night bath parties in the open air. Summer only on Saturday nights. 

 With Budapest card, the official city card is valid for 2 times walking tour. If you have any type of Budapest card (24 h, 48 h with Hop on bus and 72 h) you can take part on Free Walking Tour on Buda and Free Walking Tour on Pest.  The "Buda" tour starts every odd days at the Trinity Statue at the Buda Castle at 10:30. The "Pest" tour starts every even days at Deák Ferenc Square, in front of Sütő street (Tourist Information Center).   Every tours are 2- 2,5 hour long and available in English.