See massive fossils that are over 200 million years old in northeastern Arizona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

A small Richmond island dotted with the remnants of hundreds of years of history.

The skeletal white beams stand as a monument to religious dissent.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.