The Boulder Klub Letzebuerg was founded in 2007 and is the only bouldering association in Luxembourg. The Bouldering Gym of the B.K.L. is named BLOC HOUSE and is located 12, rue du Pont, L-2344 Luxembourg.
Although the B.K.L. is very engaged in organizing various Bouldering Events. The association regroups many of the best outdoor bouldering athletes of Luxembourg, who are regularly training at the Bloc House.