Eighty million natural history specimens call this gargantuan museum home.

One part local history, 99 parts gruesome haunted house.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

The prototype for all Nazi concentration camps.

Super-heavy Nazi architectural experiment.

A fascinating insight into daily life in the Eastern Bloc.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Five soviet prisoners of war were executed at this spot just days before the liberation of Norway.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

See some of the world's greatest racing horses at this idyllic thoroughbred breeding facility and garden complex.

A stunning Victorian abbey and walled garden on a lakefront.

The modern birthplace of Irish freedom.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

A hugely vast Irish landscape of barren rock that stretches for miles.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

The ancient tomb acts as a calendar that keeps perfect time.

A open air theatre built on a cliff by an eccentric British woman.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.