This ruined folly was originally built to honor a failed American state that would have become "Westsylvania."

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

This concept building is the UK's first attempt at making a permanent structure of nothing but trash.

To literally keep their waste out of their own backyards, the citizens of this English city built an impressive sewer system that is still in use today.

An abandoned World War II tank left to rust in the downland.

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

This tunnel entrance is built to resemble a grand castle but no one is quite sure why.