At high tide, the base of the lighthouse covers practically every inch of the island.

England's "pier at the end of the universe" unites astronomy and contemporary architecture.

A quartet of rusting satellite goliaths are all that remain of a communication network that protected Britain from German and Russian air strikes.

Huge winged monument in the United Kingdom.

Oxford University's stateliest library seems designed to make students truly feel the weight of knowledge.

A petite castle folly in the English countryside.

Pop culture has helped to keep this iconic British building from being destroyed.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Surreal riveted sea forts once protected the Kent shores from German attack.

The industrial monstrosity known as Bagger 258 is a colossal mining machine built in the DDR - but now left for dead in a German field.

This uninhabited volcanic island is the most remote in the world.

World's strongest whirlpool.

Cold storage for agricultural biodiversity.

These concrete domes were installed on an Icelandic bluff to honor a very specific musical tradion.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

This derelict superstructure was a very important warning system for the Soviet military.

A subterranean Holocaust refuge within one of the world's longest cave systems.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Two islands just 4 km apart separated by an International Border and Date Line.

The deepest hole drilled in the name of science, where evidence of Precambrian life was found.

This abandoned oil depot produces world's longest echo in a manmade structure.

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

Once the most densely populated place in the world, this island is now a ghost town.