The fifth-longest natural arch in the world, and the longest outside China.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

San Francisco’s condensed garden of incredible plant growth.

The oldest lawn bowling club in the United States.

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

A modern mechanical planetary system, part of a 10,000 year clock.

Treehouse motel and treehouse-building school.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

It's not your typical library, memorial, or book store.

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

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

On Hurricane Island, a former ghost town has been transformed into a forward-thinking research center.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Legend says those who drink from this trickle of water are destined to return to Montserrat.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

Every year, the colorful murals of Montreal get a complete makeover.

Its unique collection details the history of the state's svelte railroads.

Iceland's tribute to its thankless civil servants.

A pig barn converted into one of the most eclectic residences in Nantucket.

The former Naval shipyard is open for exploring - mostly.