This one's definitely for the adrenaline junkies - and with a name that translates as 'Two Towers', there are either going to be orcs here, or...heights. This jump centre certainly has a mean list of activities to choose from, whether you wish to go alone or in a group, perform any no. of jumps, and from various height 8-30m high (start small and build up your courage, huh?); you can choose free jumping, swing jumping, stunt jumping, and the cool atrium jump, and can pay as little as 30zł or 1000+zł, depending on what you wish to experience. This outdoor centre is found in the north-eastern district of Białołęka, which is best reached from the centre by tram no. 4 from Centrum (stop no. 08), then switching at stop Odlewnicza 05 taking bus no. 214 until you reach stop Os. Marywilska. From here, you are right next to ul. Kupiecka, with the two towers visibile only a short distance away.