An exquisite collection of fairytale conveyances that puts most car museums to shame.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

The historic home still shows the scars from a little run-in with the British in 1813.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

This improbable contraption was passed down through five generations of industrious Tennesseans.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

A secret greenspace hides atop a Capitol parking garage.

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

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

A line of blue paint marks the route of the inaugural parade.

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

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

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

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

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.