Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

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

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

Whimsical cartoon cars suspended on posts soar over an automotive shop.

Just a man taking his prehistoric pet for a stroll.

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

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

An experimental, automotive replica of Stonehenge.

It's safe—and permitted—to walk across these twin natural sandstone arches.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A hand-built folk art installation covered with messages of God's love.

The ghostly remains of an accidental sea.

Version of the French Riviera destroyed by the sea.

Huge otherworldly domed rocks on the shore of a deadly lake.

The sea once considered an ecological wasteland is now called "crown jewel of avian biodiversity" by scientists.

At this deceptively beautiful beach, nothing is what it seems.

Catch a glimpse of the elusive Peninsular bighorns right off of the desert freeway.

A UFO scrapyard in the California desert.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

A replica of the home of a famous fictional troll family.

Pigduck of Turku.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.