English: This is the northeast corner of 5th and K Streets NW in the Mount Vernon Triangle neighborhood of Washington, D.C. The top photo was taken in 1920. The bottom photo was taken in 2010. (top) The Convention Hall Market, originally named Northern Liberty Market, was located on the east side of 5th Street NW, between K and L. The market opened in January 1875 and was designed by architect James H. McGill. In 1946, a fire resulted in the roof's collapse. The market was reopened, but with a flat roof. The building was painted pink in 1955 and renamed Center Market City. The market finally closed in 1963, and from 1965 to 1974, it was home to the National Historical Wax Museum. The empty building was finally demolished in 1985. (bottom) Constructed in 2008, CityVista, the neighborhood's largest development, was co-designed by Michael Marshall Architecture and Torti Gallas and Partners. It's comprised of three residential towers with 224 apartments and 441 condominiums.