A collection of over 15,000 zines works to preserve DIY publishing culture.

This hotel is located on the edge of the world's largest salt flat and is made out of the only material around.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

These 100-year-old tunnels in downtown Provo house artists, restaurants, and a few surprises.

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

Led Zeppelin wrote some of their most iconic songs at this little 18th-century Welsh cottage.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

A tribute to the intrepid explorer and his crew who perished in terrible conditions on an ill-fated expedition to the Arctic.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

This semi-hidden Manhattan restaurant is based out of a loading dock.

The unbelievably opulent home built for an infamous newspaperman.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

Quite simply the largest tree in the world (by volume).

America's most famous piece of self-built architecture.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The only ski tunnel in North America provides easy access to amazing snow and beautiful views.

A house carved into a rock in the 1940s.

Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

Opened in 1956, the first modern indoor shopping mall in the world was inspired by the shopping arcades found in European cities.

Sculpture garden and miniature golf course blend together in the oversized backyard of a Minnesota sculptor.

One man's quest to save his town with a trail of record-breaking sculptures.

One of the few remaining indigenous petroglyph sites in Nevada.

A self-built castle made by a mysterious man.