Realty Syndicate Building at 1440 Broadway was built in 1912 and housed "Borax" Smith and Frank C. Havens's Realty Syndicate that created the Key System. It is listed on the National Historic Register. The Key System's subsequent administrative headquarters building, built as the Security Bank and Trust Company Building in 1914, still exists at 1100 Broadway in downtown Oakland and is listed on the National Register of Historic Places. The building suffered some damage in the 1989 Loma Prieta earthquake and is as of June 2020 unoccupied, although there are plans for the building to be rehabilitated by a developer constructing a larger new building adjacent to it. A building which has been converted for restaurant use at 41st Street and Piedmont Avenue in Oakland is the partial remnant of what was formerly a covered stop for trains on the C-line. (The tracks followed 40th Street, crossed Howe Street and curved through the parking lot behind Piedmont Avenue shops, then merged onto Piedmont Avenue at 41st Street and headed toward Pleasant Valley Avenue.) Old photos of the Key System are on the walls of the restaurant, as well as a mural of Key System images on one of its outside walls. In December 2014, the mural was partially destroyed during renovation of the building. This act, apparently done swiftly and without public notice, has stirred considerable controversy The old Key System Piedmont shops building at Bay Place and Harrison is now a Whole Foods Market retail store. This building was originally built in 1890 as the powerhouse and car barn of the Piedmont Cable Car Co. In the 1920s, it was substantially remodeled and used as a Cadillac showroom which closed in the mid-1990s. The building sat vacant until 2003, when Whole Foods initiated a radical interior redesign while retaining and restoring much of the facade. The bus yards of today's AC Transit in Emeryville and Richmond were originally the bus yards of the Key System. The Richmond yard was also previously the site of the Northern Carhouse of the Key streetcar system. Several streetcars and bridge trains from the Key System are preserved at the Western Railway Museum at Rio Vista Junction in Solano County, as well as a Bridge Unit at the Southern California Railway Museum in Perris, California and a streetcar at Seashore Trolley Museum in Kennebunk, Maine. One of the 0-4-0 Steam locomotives used to push