Boulderklub Kreuzberg on Clmb House. Venue in Ohlauer Str. 38, 10999 Berlin-Kreuzberg, Germany, Germany. Boulderklub Kreuzberg is a 1,300 m² bouldering gym with a café, a training area and a kids' area for ages 4 to 13. It opens early (7:00 on weekdays), and a j...