Immediately to the west on Jackson Street is the Union League Club of Chicago, founded in 1879 as a civic organization for "upright, law-abiding businessmen". To the north are the three buildings comprising Ludwig Mies Van der Rohe's minimalist Federal Plaza: the 1964 Everett McKinley Dirksen United States Courthouse, the only courthouse designed by Mies; the 1973 United States Post Office Loop Station; and the 1975 Kluczynski Federal Building, Mies's last project, considered to mark the apex of his career. The triangular, 27-story Metropolitan Correctional Center, a detention center serving the Federal courts in the Dirksen Building and nearby Ralph H. Metcalfe Federal Building, is southwest of the Monadnock at Clark and LaSalle.