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

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

Acres of salt crystal pyramids dry in the sun along Thailand's "salt road."

The last four extravagant street signs of London's historic banking street.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Tiny memorials honor individual victims of the Holocaust.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

It's good luck to be mocked by this monkey.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

A brush maker used his factory to protect blind Jews from the Gestapo.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

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

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

Before Nixon, "watergate" meant canals.

The world's oldest bookshop still in operation.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

An 11th-century fortress home to one of the most influential royal houses in medieval Europe.

On the Oregon coast is a natural hole that seems to be draining the sea.

The world's longest and deepest train tunnel.

A tall karst islet popularized by 007.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.