Who needs fancy modern water slides when this giant North Carolina rock works just as well?

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

In paradise, feral pigs have claimed an island all to themselves.

Half of a waterfall goes into the river while the other half seems to disappear.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

An Italian hillside ghost town.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

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

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

Abandoned medieval hill town.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Walk through Czech history in Prague's largest graveyard.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The remains of Crystal Palace Great Exhibition of 1851.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The largest permanent Monopoly board makes one of the longest games even bigger.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Visit this playground of waterfalls, caves and sinkholes.