Banksy's image of a naked man dangling from the window of a sex health clinic.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

Thailand's distressed elephants find peace at this Chiang Mai sanctuary.

An ancient knight and a symbol of the city's freedom.

Gargoyle head that brings good luck.

The world's oldest bookshop still in operation.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Tiny memorials honor individual victims of the Holocaust.

This stunning concert hall has become a symbol of Iceland's national recovery.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

A sulfuric martian landscape that looks far better than it smells.

Three columns of volcanic rock shoot out of the ocean.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

An encyclopedic collection of mammal penises.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The most visited, and possibly most controversial, museum in Germany.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Staves, storm-calling, and of course, necropants.

Scotland's first Masonic lodge may also be the oldest in the world.