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

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

A cluttered and astounding collection of antiquities and curiosities.

Hear the quietest sound from across the dome.

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

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

An abandoned train station in Munich constructed for the 1972 Olympic games.

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

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

A cursed torii gate still stands on the edge of Haneda Airport, decades after its shrine's relocation.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

Inmates dig the graves at the largest prison cemetery in the U.S., the final resting place of both cowboys and Indians.

Once a path for Jewish funeral processions, this unassuming alleyway is rich in local lore.

This peaceful sanctuary is one of the oldest Buddhist temples in Colombo.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A castle perched precariously over the Crimean Sea.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

An unusual collection of self-made musical instruments and unique noises.

This amazing ancient cave was kept secret for seven years to protect it from the public.