There's an exclusive Beefeaters pub hidden in the Tower of London.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

A diverse collection of wax, bone, papier-maché and mummified relics.

A complicated contraption for telling time by the moon.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

A large piece of modern art makes this roundabout the only one in the world with its own laser.

Eighty million natural history specimens call this gargantuan museum home.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

One part local history, 99 parts gruesome haunted house.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Gigantic Romanian salt mines used to heal respiratory conditions.

This massive underground salt mine now holds a sci-fi theme park in its depths.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

Climb to the top of this windmill for a scenic panorama and up-close look at wind energy production.

Vast fan-shaped British cemetery honouring American servicemen lost in World War II.