Open Air Festival ARENA founded by the Forman Brothers’ Theatre is a showcase of theatre, new circus, music and contemporary performing art. It includes performances produced by the Forman Brothers as well as performances by artists that Petr and Matěj Forman met during their travels around the world.

ARENA 2026 brings a fresh line-up of contemporary circus premieres, theatre, concerts, art workshops and more for audiences of all ages. This year, the festival tents move to Štvanice Island, while performances will also take place on the theatre boat Tajemství, once again moored at its permanent spot on the Prague 2 riverfront.