Friendships have been forged over ham and eggs every Wednesday morning for nearly a century.

A castle that was built stone by stone by an eccentric journalist.

Established in the '60s, a family-owned tropical drink bar founded by Ray Buhen, bartender to the stars.

Opened as part of the New Deal, the training facility now features World War II-era structures and a pylon that once stood at the World Trade Center.

Historic marionette theater features thousands of handmade puppets and free cups of ice cream.

Entering this curiosity shop is like stepping into a mad scientist's lab.

Portland had a unique approach to Cold War-era protections.

No two pieces are exactly the same at Portland's hippo-themed hardware store.

Inside a humble hangar is some of the best roller derby the world has to offer.

Treehouse motel and treehouse-building school.

This natural marble cave is one of only five national monuments in Oregon.

A wellspring of creativity in an already artsy East London neighborhood.

The secret wartime bunker built on the platforms of an abandoned Tube station.

A historic hill of tall tales, with one rather special tree.

The Tudor-style cottage in the middle of the square is not quite what it seems.

A celebrated bandstand at the center of what was once the worst slum in London.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

You will not be able to miss this building.

This studio was home to David Bowie's first single, even if it did turn away the Beatles.

London's most popular recording studio, located in the capital's East End, runs partly on solar power and has played host to some of the world's biggest acts.

A monolithic monument in Greater London.

Black cat statues guard this temple-like Egyptian revival factory.

A network of concealed passageways lies within a busy London Underground station.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.