New York City's smallest piece of private property.

One of only two commuter aerial tramways in the United States.

A self-built castle made by a mysterious man.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Where manatees are the snowbird vacationers in these balmy Florida springs.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This frequently-photographed waterfall takes only a short hike to visit.

Take a drunken tour inside the world's largest known geode.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

An underwater city for the dead.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A heavenly experience, right here on Terra Firma.

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

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

Where beautiful signs live on forever.