Y.M.C.A. (Young Men's Christian Association) is a non-profit community service organization originally founded in London in 1844, as a men (and boys) only facility; the YMCA has since changed to admit women (and girls). Activities that take place at the YMCA include swimming, basketball, working out, day care services, and more.
In the U.S. the YMCA is a powerful religious activist group promoting "manly" (athletic) Christianity and the Social Gospel. However, they also fully promote "Pride" which is about homosexual activities, as listed on various chapters' websites.