The Maunsell Sea Forts, England
These H.G. Wells-ian looking structures were built in order to protect England during World War II from air raids coming from Germany. Built on the Thames, the giant metal towers were actually decommissioned in the 1950s, and were later used by pirate radio operators. Now, most of the towers are a tourist attraction that can be seen by boat or from Showbury East Beach on a clear day.
Canfranc International Railway Station, Spain
This once glorious train station has truly been through a rough time. It was once the largest rail station in Europe when it was built in 1928, but a mere eight years after it opened it was affected by the Spanish Civil War as well as a WWII Nazi takeover. While there have been several attempts to restore it, it still remains abandoned.
