Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

This Taiwanese promontory is covered in otherworldly hoodoo formations.

This popular pilgrimage site offers a hole filled with holy healing dirt.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The highest point in Oklahoma used to be a lawless outlaw's paradise.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

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

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

England's most notorious suicide spot.

Recycling meets art in this colorful barricade.

This elaborate towering structure was once famed for its revolutionary height.

The largest self-built castle in the U.S., six decades in the making.