The highest bridge in America was built for an almost unnervingly small amount of money.

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

The United States's largest hand-dug well is topped with a state-of-the-art museum.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

The system of air guns are fired off remotely to scare any trespassing avians.

The romance of early commercial flight still fills this Art Deco destination.

This campus chapel is Robert E. Lee's final resting place and a topic of debate about the legacy of the Civil War.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

A former major munitions plant that has been converted into a sprawling art space.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

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

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.