A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

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

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

A hoard of sky catalogs, astrophysical journals, even the works of Galileo and Copernicus.

Largest Roman Catholic church in North America.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

The national park was once a plantation estate.

This leafy estate is worth $18 million and is so grand it has two mailing addresses.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Peek inside restored planes at this off-the-beaten-path collection of aviation archaeology.

The oldest warship in Europe is still afloat.

One of these two land speed record-breaking vehicles went so fast it shattered the sound barrier.

A working farm turned into a museum dedicated to the world's most unbelievably tiny cars.

A rare example of this century-old British tank stands near the center of town in Ashford.

What was once England's second-richest abbey is now a haunting ruin.

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

A collection of over 15,000 zines works to preserve DIY publishing culture.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.