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.

This Balinese sea temple is thought to be guarded by the hundreds of monkeys that live around it.

Hindu temple of the dead home to hundreds of long-tailed macaques.

Five miles of underground river link lake to ocean.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

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

The longest continuous lava tube in Oregon.

A sculpture of a salmon swimming through a brick building.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

A 19th-century Gothic, castle-like statehouse by the Mississippi River.

The world-record holder for the longest bridge stretching continuously over water.

This strange example of the Egyptian Revival architecture trend now holds Mardi Gras floats.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

The final resting place of New Orleans' most famous voodoo priestess.

New Orleans' famous cemetery, located on the site of a former race track.

A fruit-loving town welcomes visitors with a giant melon set against the sky.

Mysterious glowing orbs float through the desert night.

A museum dedicated to the alleged Roswell Incident.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.