This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

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

A six-ton wedding present for the King of the Scots.

Brass bricks outline the locations of Edinburgh's lost, lively market stalls.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A sweet symbol marks the place where torturous executions were once carried out.

The most loyal of little dogs, or a Victorian era publicity stunt?

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

The ruins of a church destroyed by both the Great Fire of London and the Blitz, now turned into a peaceful garden.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Eighty million natural history specimens call this gargantuan museum home.

Look up from the busy streets to discover how time is kept!

Inside a London bookstore, a fireplace that once belonged to the illustrator responsible for a famous set of tarot cards.

The pockmarks across the building's facade are remnants of the Blitz.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

Rebuilt remains of a temple to Roman god Mithras.

South America's oldest surviving locomotive.

Pablo Neruda's custom-built lover's nest was made to remind him of the sea and named after his mistress' hair.

These floating gardens show what Mexico City used to look during the Aztec Empire.