A visit to the Cisterns is in many ways a visit to something otherworldly, an exhibition and event venue with a widespread appeal. But nothing seems to beat the current installation H by Danish artist Ingvar Cronhammar, who has turned the urban dripstone cave into a parallel universe in which heaven and the underworld collide in a battle of unseen proportions. When you step in, time stops spinning as darkness surrounds you in a space, where the tunes from composer Martin Hall intertwines with the dribble of water. This is your chance to put all your senses to use in a room designed for reflection.