Now a living classroom, this house was once the home of Reverend James Clinton Dent, a formerly enslaved man and a pastor.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

After his presidency, George Washington planned to live only a few blocks from the Capitol building.

The tunnel under the Capitol Building where Congress takes out its trash.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

An eight-foot-long pine cone made out of 140 recycled steel shovels is an homage to Maine's state flower.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

A mysterious stone embedded at the base of a historic Boston building.

Millions of numbers carved in glass represent the tattoos forced upon victims.

Dedicated to one of the darkest moments in Irish history.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This steep slide at a kids’ playground went viral after an police officer tumbled down it.

An abandoned concrete jungle surrounded by a lush park.

This unconventional used book store was once in the news for the surprising act of burning books.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

A magnificent church designed by world-renowned architect, Frank Lloyd Wright.