A hands-off space for graffiti artists to hone and display their skills.

Eighty million natural history specimens call this gargantuan museum home.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Home to more than 13,000 pieces of war memorabilia and military equipment.

A large visitor's complex and place of remembrance on the outskirts of the DMZ.

The best place for scenic views of the DMZ and North Korea.

Secret North Korean passage discovered below the world's most dangerous border.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

Take a few seconds to look at this abandoned, art-filled station as you pass by on the subway to Ueno.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

A sad reminder of the World War II bombing stands largely unnoticed on a street corner.

Once a black market electronics marketplace, now an otaku shopper's paradise.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Scattered throughout London are ancient remnants of the city's former bounding wall.

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

A quiet memorial to those who died saving others in the heart of the City of London.

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