The first big festival of the summer, United Islands of Prague will take place June 25–26, and is returning to its roots on Prague’s waterfront. Events will take place on Kampa, Janáčkovo nábřeží, Střelecký ostrov, Dětský ostrov, and other locales. Friday will have a limited number of events including a concert by German band Shelter Boy on Kampa, among others. The main festival is Saturday, with music starting at 10:30 am and going to 10 pm, not counting afterparties. Seven main stages for music will be complemented by several food zones including a large one on Kampa, workshops, presentations by NGOs, sports and other activities. this is billed the German Edition, Volume 2, but there are also visiting acts from Austria, Poland, Slovakia, and other countries. For more info visit the festival website or Facebook page.