The oldest operating pharmacy in the world features 800-year-old recipes.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Pilgrimage site for star-crossed lovers.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

This university transit system is a 1970s vision of the future.

A beautiful hidden gem in central West Virginia.

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The world's largest Holstein cow.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The largest outdoor art gallery in the Northwest United States.

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

A cemetery housing wild west legends in South Dakota.

A majestic hotel that also stands as a historic relic.

The only road through the heart of Glacier National Park.

Spectacular views await visitors to this lake.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

A massive sea stack famous for its appearance in The Goonies.