An interactive exhibition space dedicated to the kinetic sculptures of Swiss artist Jean Tinguely.

An unassuming Swiss institution houses Europe's largest toy museum.

Terrifying derelict military hospital once housed a recuperating Hitler.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Metro station with a claim to rock n' roll fame.

Tiny memorials honor individual victims of the Holocaust.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

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

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

An eerie, derelict amusement park in Berlin.

Obscured within a ring of trees, this abandoned World War II relic hides on a German hillside.

Bell tower juts out from a village buried under a lake.

A mushroom-shaped outcropping that has come to be the symbol for an entire town.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

A tiny island is connected to the mainland by a private railway that residents travel in their own personal wagons.

San Francisco's newly reopened hands-on science museum.

A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.

This Scottish burial tomb once held hundreds of ancient eagle bones.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

Largest lake in Great Britain measured by surface area.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.