This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A treehouse assailed by the elements and the government, now gone.

143 feet of leaping muskie whose mouth can be used as a wedding venue.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

Unconventional site where the tracks of Zurich tramcars intersect.

Enter the cabin of a life-sized Hindenburg replica.

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

A massive volcanic plug is now a protected area that hosts a number of bird species.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The first declared National Monument in the United States.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The celebrated eyesore created by starry-eyed sweethearts.

Climb inside an iron crystal magnified 165 billion times its normal size.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

France's most famous cemetery, with some of its most curious tombs.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The footprint of a frustrated devil in Munich's Cathedral.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The patron saint of spinsters grasps a container of dried blood.