The hippo that stands on this university campus was once a drunken flea market purchase.

The National Park Service’s best-kept secret with views that rival any in D.C.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

Once home to the largest photo service in the United States.

The local community brought back this land to transform it into a nature preserve.

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

A street in front of NASA's D.C. headquarters has been named in honor of the Black women who were essential to early spaceflight.

This groundbreaking 16th-century map is known as "America's birth certificate."

A brass and marble scale model of the solar system embedded in the concrete.

The heaviest gold coin ever minted.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

One of the last Art Deco gas station still standing in Dallas.

A different Edgar Allan Poe built this charming Victorian home.

A melancholy jester sits on the grave of a famous 20th-century ballet dancer and choreographer.

A set of outdoor stairs named in honor of a famous Austrian artist.

The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

This free series of exhibitions honors the fascinating history of the region.

Executions were once held near this beautiful 18th-century fountain.

Most historians agree that the so-called "Gentleman Pirate" wasn't much of either of those things.

Dedicated to the man who created the first radio wave communication system.

This restored house built from a Sears kit in the 1930s is a physical remnant of FDR's New Deal following the Great Depression.

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

After retiring, Gary Pendergrass turned his yard into a wonderland of outsider art.