This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Just a man taking his prehistoric pet for a stroll.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A secret climbing tree hides along the side of a Costa Rican road.

The translucent turquoise hue of these natural swimming pools comes from a high concentration of minerals.

The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

This tiny tropical village was sick of anonymity so the locals made this sign, which actually changed the name of the town.

Grand Cayman is home to a colorful sculpture garden filled with giant concrete animals.

Send a postcard while vacationing with Satan.

These two giant boulders mysteriously perched on a 60-foot cliff may have been slung up there by a raging tsunami.

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

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

This rock in the middle of a river in Jayuya contains dozens of Pre-Columbian Taíno petroglyphs.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

Where the oil industry began.

This collection honors the iconic, and proudly American lighter that just won't quit.

This jail which was in service for over a century is now open for curious visitors.

A local prank turned town icon.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This site in Caldwell County is the location where the Cherokee and Catawba are said to have entered a peace treaty.