Sleep in a glass pod dangling off a cliff.

The “City of Stairs” sits high in the Andes, above the world’s largest underground copper mine.

This ancient Roman arch misled treasure hunters for centuries.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

A forgotten "city of water" underneath the famous Trevi district.

The underground sanctuary of a mysterious ancient cult.

A giant scrawl on the skyline of south London.

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

The largest clown school in Britain offering accredited degrees.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

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

This home on a quiet suburban street is completely covered with vibrant mosaics.

This hidden green space is the city's second largest conservatory.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Museum preserving torture methods from the past.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

An encyclopedic collection of mammal penises.

This canyon is comprised of gorgeous waters and magnificent basalt columns.

The oldest steel ship in Iceland has been beached for years and is now a rusting ruin.

The Icelandic Sea Monster Museum explores the area's history of aquatic cryptid sightings.

Cold storage for agricultural biodiversity.

The best place in the world to buy tinned fish.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.