In 1913, the El Cortez hotel was placed on the National Register of historic Places. It has been in existence since 1941, and is one of the oldest properties in Las Vegas. The casino has been in continuous operation at the same location since that time, making it also the longest running casino in Las Vegas. The style of El Cortez is Spanish Colonial Revival, reflecting the facade that it was given in 1952, when it was modernized. Years ago the El Cortez was owned by the legendary mob figures of Bugsy Siegel and others. The property is one of the few casinos never to have changed its exterior, and has kept the same signage and architecture for over seventy years.