Once owned by the largest employer in Colorado, these ovens have been abandoned for over a century.

The clock that sets them all.

Winter and summer solstice aligned sculpture in the middle of nowhere.

A fascinating collection of art made from petrified wood and fossils by two octogenarian twin brothers.

Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

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

An eclectic assortment of medieval architecture in a small Iowa town.

The notorious couple camped at this site after a bloody shootout with police.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

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

Massive still life just off the highway in Kansas.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

A former utopian healing center created by a huckster and built by derelicts.

The most isolated mailbox in America lets desert travelers record their passing.

In the middle of the desert, miles from any human life, sat an anomalous pay phone that still magically answers your calls.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

A tribute to the statues of Easter Island along Route 66.

A series of labyrinths in the Nevada desert inspire meditation and calmness.

All of the 20 occupied houses in this mostly abandoned town feature some curious display of junk art.

A century-old miner's quarters turned mansion.