An exotic wildlife habitat right off The Strip.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

This historic lighthouse was well known for the large number of women who served as its keeper.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

The longest-covered bridge in the state of Maryland.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

A historic dam made famous for its turbines and feature in a Hollywood classic.

Once a gas station, this flightless airplane beside the Old Dixie Highway now houses a barbershop.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.