Oldest Protestant church in the Middle East, designed to resemble a synagogue.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

The world's tallest statue of an American hero.

Controversially claiming the title of world's biggest bass drum, UT's Big Bertha was once made radioactive by the Manhattan Project.

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

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Abandoned silver mine strewn with wrecked and twisted structures.