A unique tower
Although this looks like an amusement park, it is actually an underwater escape training tank. Did you know that something like this existed? The world is full of incredible things, and this is one of them. This place was created between 1949 and 1953.
The Submarine Escape Training Tank is a 100 ft (30 m) deep facility operated primarily to try out submarine escape equipment used by the Royal Navy. The tower was also leased privately to civilian diving clubs for recreational diving and dive training.