Where animatronic singing fish go to retire.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

Beach instrument turned bed and breakfast.

The meteor that sealed the fate of the dinosaurs landed at this site, one of the largest impact craters in the world.

The enigmatic and seldom visited ruins of a Mayan city-state.

A lake at the bottom of the ocean.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

A modernist landscape of water and sci-fi concrete.

The stoutest tree in the world.

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

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

Statue of Edgar Hernandez, the first victim of swine flu.

America's smallest "national forest" has only 33 trees.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

Frida Kahlo's childhood home, now a museum of her life and works.

The only castle in North America to ever house European sovereigns.

This fantastical house shaped like a seashell brings aquatic design to architecture.

66,000 pieces of art, donated by one of the world's richest men.

Climb through the life of a Mexican hero as you ascend a 130-foot statue.

This church, buried halfway in lava rock, is all that remains of a Mexican village destroyed by a volcano.

Extraordinary sculpture garden created by an eccentric English poet.

Two waterfalls flow down the cliff faces decorated with rare natural basalt columns.

A gargantuan crystal kingdom.

Hotel designed around a 16th century Mexican bullring.