An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

Despite being made of a seashell mortar, the crumbling remains of this historic Florida mill are still standing.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

A winding, cliffside stretch of road overlooking the Delaware River.

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

What remains of the summer palace of King Kamehameha III.

This beautiful eden was once the vacation home of Tahitian royals before Marlon Brando bought it.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

The world's largest fully steerable radio telescope.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

The United States Capitol's former columns still stand.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.