DIY collection of eclectic holdings.

A former electrical substation is now home to an eccentric junk art masterpiece.

This failed condo development was reborn as a street art hub.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A museum in rural Utah documents the history of the Japanese Americans who were forcibly relocated there.

A creepy, deserted mock Arabian village can be found in the middle of the Qatari desert.

This tiny structure was built by the creator of the Brooklyn Bridge.

A sophisticated astronomical tower built by one of the greatest Persian scholars of the Islamic Golden Age.

This First Nations monument is a peaceful spot with vast views of the Calgary prairie.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

The ruined doorway is a portal to the building's turbulent and torturous past.

Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

England’s ancient oak tree has such an impressive girth, people have been hosting parties within the hollow trunk for centuries.

Mexico's largest collection of masks is found in the ruins of an abandoned convent.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

Two World War II aircraft lie within the jungle around this abandoned runway.

This ancient goddess temple inspired the design of India’s Parliament House.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

This isolated airport in the middle of the Everglades sees more alligators than planes.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

The flock of plastic poultry is an ode to the classic comedy staple.

The smallest restaurant in the world.