Three bridges and one giant canyon make up this fantastic Spanish settlement.

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

The most loyal of little dogs, or a Victorian era publicity stunt?

The famous aviator's final resting place is a study in natural beauty.

The drama of nature in full effect in this Nevada State Park.

The ghost town that ended up on Ebay.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This black shoreline is made up of exploded lava particles.

A six-ton wedding present for the King of the Scots.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

A hard-to-reach oasis in a desolate corner of Death Valley National Park.

Collection of vintage trailers double as hotel rooms.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

A mysterious lake provides fresh water without any source, somehow restoring itself from atop its mountaintop perch.

Macabre astrological automaton clock dating to the late 1400s.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

Scotland's oldest medieval bridge is also among the last reminders of early medieval Aberdeen.