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

Here’s how Robert the Doll earned his reputation as the most haunted doll in the world.

100-year-old shipwreck you can walk up to at low tide.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

Limestone caves with spectacular showcase chambers.

A wall of chewing gum moonlights as collective art.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

The world's largest military aircraft cemetery.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

It specializes in outsider art and artifacts of secret societies.

A semi-scholarly approach to sex.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world’s largest coastal brick fortresses.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

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

The Magical World of George Phar Legler.

The largest stone moai on Rapa Nui.