Climb inside an iron crystal magnified 165 billion times its normal size.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Brussels' favorite peeing boy has a sister.

Cozy basement bar sports an inventory of over 2,000 beers.

A little sculpture with a large wardrobe.

The phone booths in this English town have distinctly milky hues.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

This bell stars in a tragic love tale and is said to make wishes come true.

This luxury shopping lane has been protected by its own tiny police force for over a century.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The walls and streets of the ancient city are peppered with penises.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Spain's stunning solar energy plant.

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

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

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

Legends say that this Art Deco apartment building almost became Hitler's British headquarters.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

The blinking light atop the iconic landmark has been sending secret messages for decades.