Grande Opera is the biggest fetish and BDSM club in Frankfurt region. It’s not located in Frankfurt itself, but a close suburb called Offenbach. It’s a mixed crowd of gay, straight and bi customers, but all into fetish. They have themed parties where they host actually proper parties with people dancing. The place is quite big, with a lot of facilities and toys to play with. Staff is also very friendly. Entrance fee is quite reasonable, drink prices slightly above the average for Germany.