A sign marks the plane crash that caused two nuclear bombs to fall in North Carolina.

The fading, forgotten remains of a once bright and booming factory.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

A Cold War site complete with rusty structures, hiking trails, and beautiful views.

Made famous by cable TV, this oddball collection of antiques and collectibles is a cut above the rest.

The Mighty Wurlitzer organ continues to belt out the tunes at downtown El Segundo's historic home for silent and classic movies.

This North Carolina store preserves a historic moment in America's movement for racial equality.

This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

A sculpture of a flying hawk made from colorful car doors.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

The home of famed war correspondent Ernie Pyle is now a library and museum dedicated to his memory.

A museum dedicated to the alleged Roswell Incident.

The U.S. Air Force has an anti-satellite laser weapon.

Deadly airliner crash preserved for those willing to climb and pay respects.

Buried beneath the New Mexico sands are believed to be millions of copies of Atari's E.T. video game.

This sculpture is intended to reset a person’s creativity.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Before he was America’s most famous preservationist, John Muir was an ingenious mechanical inventor.

At 207 feet, one of the world's longest continuous escalators.

One of the few remaining Rosenwald Schools left in Virginia.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.