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

The world's last remaining store of its kind.

Macabre astrological automaton clock dating to the late 1400s.

A tree that defies gravity grows in an ancient ruin.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

Georgia's first brewery is also one of its oldest surviving buildings.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

The so-called "Bridge of Thighs" in Palm Springs allows nudists to discreetly cross the road.

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

This stone is a marker of one millionaire's personal vendetta against gravity.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

The largest outdoor art gallery in the Northwest United States.

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

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

A tunnel of hardened lava along Maui’s famous Road to Hana.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

An old World War II hangar holds 20 vintage aircraft and the rare opportunity to take a ride in a 1940s warbird.

This great stone guardian of the forest is a relic from the land's volatile volcanic past.

Formerly secret, precariously perched boulders.

The beauty of urban decay, hiding some dark secrets.

The world's most active stratovolcano is almost always erupting.

There's something big lurking beneath the surface of this tiny Oregon park.