The first memorial dedicated solely to the Black troops who fought for the Union.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The world's oldest soul food restaurant is also one of its best.

Before Nixon, "watergate" meant canals.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

Largest Roman Catholic church in North America.

The national park was once a plantation estate.

The walls of the iconic dome are hollow and have a secret stairway.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Home to items never before seen by the public.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

The site of the climactic scene from the classic horror film is now a historic landmark.

One devoted couple has donated multiple recreations of Michelangelo's sculptures to this South Dakota town.

A short but powerful waterfall resides amid Colorado’s Great Sand Dunes.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

Above Breckenridge, a destructive mining technique sits sunken in a small pond.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A downtown park built on top of unclaimed graves.