A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

One artist’s scheme to expand museum viewing hours into the evening led to the illumination of an entire city.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

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

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

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

A bizarre house filled with an astounding array of collections.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

An exotic jungle hideaway run entirely by indigenous Kichwa women.

A tribute to the furry local heroes who helped get residents through many tough times.

A stretch of land where the sour-sweet vegetable is cloaked in darkness and grows so fast you can hear it crack, squeak, and pop.

Staves, storm-calling, and of course, necropants.

British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.

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

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.

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

A unique attraction and museum dedicated to exploring iconic roadside structures.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

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