Reference Projects Climbing Gym, Ljubljana Currently the largest climbing gym is located in Štepanjsko naselje in Ljubljana. It consists of three climbing halls, warm up hall, dressing rooms, toilets, bar and a shop with sports equipment. Images: Miran Kambič Architecture office ELEA iC Services main water supply connection indoor sanitary installation floor heating/cooling water/water heat pump ventilation and air conditioning Specialty of the project use of renewable energy source – groundwater ventilation of large spaces passive cooling Year of the project 2013 Project status completed – august 2013