Birmingham has many notable historic landmarks today, but so many more are all but forgotten. The Bangor Cave Casino was once a world-renowned speakeasy. The Thomas Jefferson Hotel featured a zeppelin mooring station, drawing lots of attention from tourists. Other significant sites from the past, such as Hillman Hospital and the buildings on the ""Heaviest Corner on Earth,"" are unknown even to natives now. Local author Beverly Crider presents an intriguing and educational tour through these and more hidden treasures.