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

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

This geothermal hot spring hides beneath a slowly growing mineral dome.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

The world's second largest single-dish radio telescope, once used to contact E.T.

Years of neglect and nature took a toll on this 19th-century lighthouse.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.