What looks like a suicide in progress is actually a statue of Sigmund Freud.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

The first museum in the world devoted to sexual gadgetry.

Countless grotesque faces stare out from this eerie Prague art wall.

A Jenga-style cylindrical tower of books that appears to go on forever.

Macabre astrological automaton clock dating to the late 1400s.

A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

One of the last doorless, continuously moving elevators still in use in the U.K.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

This series of Scottish caves has no clear purpose other than baffling historians.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

Long abandoned underground complex to keep royals safe from a nuclear war that never came.

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

A library where thousands of books explain how to avoid another Great Recession.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

This early version of the guillotine was used to execute the man responsible for its construction.

360° views of the city plus five floors of optical illusions and hands-on science.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.