When the USA donated cement and funds to expand the airport in Laos, the Laotians built a massive monument instead.

A sapling of the legendary tree where conquistador Hernán Cortés sat and wept after an Aztec uprising.

The longest continuous lava tube in Oregon.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

This ancient jade mask depicting the Zapotec bat god was found in the ruins of the pyramids of Monte Alban.

This extraordinary geological oddity resembles human-made pavement.

An enchanting rocky island of scraggly baobabs surrounded by an ancient sea and sprawling salt pans.

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

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Moonbows over Kentucky.

This quiet park's strange sedimentary spires were named after Kodak's color film.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

This state park was once an important Native American cermonial center.

One of the best places in Florida to spot rare, carnivorous pitcher plants.

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

The unbelievably opulent home built for an infamous newspaperman.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

A giant red chair bolted to a rock on a remote mossy hillside in Iceland.

Every year locals tumble 650 feet down to the bottom of the hill chasing a Double Gloucester cheese.

One man spent 10 years building a spectacular section of road because no one else would.

A giant poultry statue immortalizes one of Alaska's more humorous town names.

An ancient Viking village in North America that predates Columbus by 500 years.