This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

The world's largest commercially available hamburger is complete with 15 pounds of lettuce, 30 pounds of bacon, and 36 pounds of cheese.

A historic presidential getaway on the continental United States' southernmost island.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

This museum glorifies the humble potato.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

America's post-nuclear-attack chambers of Congress.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

Beautiful steampunk ghosts of early Massachusetts.

The only diamond mine in the world where you can keep what you find.

An abandoned stretch of highway, deteriorating next to the operational one.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

"Where the ducks walk on fish."

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

These disused steel furnaces are now haunting ruins that may one day be a national park.

Yo, Adrian!

The first American department store, and home to the largest operating musical instrument in the world.

Eccentric concrete mansion and museum designed and built by hand from the inside out.