The Homomonument is a memorial in the centre of Amsterdam, the capital of the Netherlands. It commemorates all gay men and lesbians who have been persecuted because of their sexual orientation. Opened on 5 September 1987, it was the first monument in the world to commemorate gays and lesbians who were killed by the German Nazi regime. The monument takes the form of three large pink triangles made of granite, set into the ground, which together compose a larger triangle.

From Wikipedia