This one-time health resort was used by aristocrats around the world.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

The prototype for all Nazi concentration camps.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

An Austrian house of bones filled with hundreds of intricately painted skulls.

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

The fungus-shaped vintage gas station has served multiple purposes over its lifetime, and now serves ice cream.

Sculpture garden and miniature golf course blend together in the oversized backyard of a Minnesota sculptor.

A fitting attraction for the corn capital of the world.

Calidum et Deliciose Succosum!

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

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Every president in history is immortalized in bronze in downtown Rapid City.

South Dakota's oldest operating brewery is housed inside a historic firehouse.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

Hidden on the seventh floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.