Hidden in the New Mexico desert southeast of Roswell, nine small deep lakes formed inside sinkholes.

Located near the U.S.-Mexico border, this park remembers the famous raid of General Francisco “Pancho” Villa and his soldiers.

This former train station was once an important shipping depot for the regions farmers.

The location where the American Revolution ended.

A collection of vehicles across American military history.

A home that witnessed Civil War combat on the Sunken Road has the battle scars to prove it.

A glimpse at Walt Disney's vision for a "community of tomorrow," in miniature.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

The hide of Stonewall Jackson's equine sidekick is on display not far from where the ashes of his bones are buried.

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

A quirky Poe-themed joint on an island keen to celebrate its overlooked connection to the famous writer.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

Unannounced visitors are now welcome at the site of the largest Prohibition-era bootlegging operation in the region.

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

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.

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

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

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.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

Parking garage where Bob Woodward met Watergate source "Deep Throat."