The Pioneer and Endicott Buildings are two office buildings located in downtown Saint Paul, Minnesota. The 1890-built Endicott building forms an L-shape around the 1889-built Pioneer building. The Endicott building was designed by Cass Gilbert and James Knox Taylor; the Pioneer building was designed by Solon Spencer Beman in the Romanesque style; it was the first building in the United States to have a glass elevator. Connected in the 1940s, they are together listed in the National Register of Historic Places.
http://en.wikipedia.org/wiki/Pioneer_and_Endicott_Buildings