The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

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

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

Decades before the scandal, this staircase on the river was a literal "water gate."

The hidden offices underneath Memorial Bridge have been locked up since 1976.

The national park was once a plantation estate.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

This former Cold War missile control site played an important role in the creation of GPS.

The only surviving 19th-century water-powered mill found in the Washington, D.C. area.

These unusual rooms on wheels are holdovers from the 1960s.

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

The maritime museum that boasts the largest nautical library in the western hemisphere.

This tree is a living witness to the beginning of the Civil Rights Movement.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

This replica of the Greek structure is in the heart of Nashville.

One Confederate statue that accurately reflects the ugliness of its subject.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

The longest non-mortared wall in the country is one man's tribute to his displaced Yuchi ancestor's five-year journey to her homeland.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

A miniature city built by a single hunchbacked monk.

The pan man stands as a testament to the functionality of American cast iron cookware.