Kay Andrews's recipe was so good, her family immortalized it in stone.

This museum glorifies the humble potato.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

Supposedly Satanic numbers adorn this preserved submarine sail.

Spectacular views await visitors to this lake.

The only road through the heart of Glacier National Park.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

Crystal clear, drinkable mountain spring water by the side of the road.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

At the time of its completion, it was the tallest dam in the world.

One man's ambition created this psychedelic log home.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Miraculous tree that seems to sprout out of solid rock.

One of the smallest towns in the United States.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

Raised high above the Cimarron River, this 1,268-foot rail bridge followed a half-century of trainwrecks, bridge collapses, and an abandoned town.

Once the smallest park in the national system.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

A gaudy painted elephant stands in memory of south Florida's fallen carnies.

Former villa and estate of James Deering developed to preserve native tropical forests.

This liminal destination combines creaky carnival rides, a classic car museum, and luck-of-the-draw flea market finds surrounded by dust and drive-in movie screens.