The club Budapest Park in Budapest is the largest open air club in Budapest which opened its gates in May 2012. It is located next to
Lágymányosi Híd Rákóczi Híd on Pest side a bit outside the city center but on the way to the well populated districts 18, 19, 20, 21, 23 and also easy to reach from Buda side where the 11th and 22nd districts are located. There are enough people living around and with the great programs Park has you find many nights sold out even though the size is massive. Just for your information in club Park you have a KFC serving you all night with snacks and food which probably no other club in Budapest can offer you.
In Park there are many concerts taking place of internationally and nationally well known bands and performers such as Joss Stone, Manu Chao, Dorfmeister (from Kruder & Dorfmeister) or Anthrax and to name a few Hungarian bands there are Zagar, Hooligans or Anti Fitness Club. Nearly every weekend a smaller or larger concert is taking place in Club Park making it a top address during summer for party and music. Additionally you can watch for example live sports such as the Champions League or most probably the World Cup as well.
Prices for entrance do strongly depend on the concert that takes places but if you go there on a regular night without any fancy music act the entrance is for free.