A former sanitarium where soldiers were sent to recover in the healing waters of hot springs.

The world's largest mineral hot springs is home to a herd of bison, a free public bath house, beautiful mineral formations, and a terrifying swinging bridge.

One of America's largest retail chains got its start in one of its most remote rural destinations.

This town is home to the world’s largest arch constructed entirely of elk antlers.

A small town built on an abandoned airfield has former runways as streets and a bar and grill in an old airplane hangar.

A devilishly named gorge that was a sign of salvation for many pioneers.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The first declared National Monument in the United States.

Native Americans built this circle of stones, which was used to predict astronomical events.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The natural hot spring that was integral to the creation of Canada's first national park.

The half-mile long structure is so impressive, it even shows up on satellite images.

The only way to visit this old resort hotel is with scuba gear.

Try the alligator at this fondue spot, which has been catering to "lovers and hedonists" since 1967.

The ruins of the "20-year town" lay out among the mountains of Alberta.

This massive chapel in the middle of the Indonesian forest is both haunting and fowl.

A walkable map of the world, made from soil and stone by one man.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A replica of the beloved character's house, modeled after the author's own drawings.

A peat bog in southern Sweden provides a cozy and photogenic home for junked Volvos, Saabs, and the occasional American muscle car.

A geological wonder that helped fuel myths of trolls and giants.

These mysterious circular formations are actually remnants of 19th century gristmills.

The world's only above water sand volcano, believed to once be the bathtub of a priest.

Walking through this narrow gorge will make you feel like you've fallen into a fairytale landscape.