An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

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

A fitting attraction for the corn capital of the world.

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

This once bustling boomtown hotel is now the hottest spot in Nevada for ghost hunters.

The highest bridge in America was built for an almost unnervingly small amount of money.

This popular pilgrimage site offers a hole filled with holy healing dirt.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Legends surround this jagged rock formation in the New Mexico desert.

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

These azure waters were thought to lead to the Mayan Underworld.

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

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

A flooded Mexican cave that hides a river beneath the water.

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

This erect, phallic geological spire wasn't always named so domestically.

Roaming bison and a spectacular view at the highest point in Nebraska.

An experimental, automotive replica of Stonehenge.

The headquarters of the prestigious World Food Prize celebrates the heroes in the fight against hunger, has no cafeteria.

Millions of dollars worth of sculpture decorate this Iowa city center.

This simple home was the beginning of a long journey for the iconic Western film star.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.