The Times-Picayune recently featured a selection of historic images of New Orleans landmarks lost over the decades. One of the buildings now gone was New Orleans' Union Station (1892), which was the only train station designed by architect Louis Sullivan (and which a young Frank Lloyd Wright likely worked on as Sullivan's head draftsman). Sadly, it was torn down in 1954. See it and the other lost Big Easy buildings here.
image via NOLA.com/The Times-Picayune archive