A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Elevated freight railway turned wildly successful urban park.

Hike to the decaying remains of a dream house with a spectacular view.

A tunnel with windows, so you don't miss out on the impressive views.

The oldest continuously occupied public building in the United States.

This popular pilgrimage site offers a hole filled with holy healing dirt.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

An intricately carved Viking church overlooks a glistening fjord.

A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

Designed by Horace Trumbauer in 1893, this Gothic-style castle is now a home for academics.

This Art Deco service station has been providing tune-ups and turning heads for close to a century.

Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

A field of nothing but boulders which resembles a giant's gravel driveway.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

A daily replay of the experiment that proved the rotation of the Earth.

This elaborate towering structure was once famed for its revolutionary height.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The first American department store, and home to the largest operating musical instrument in the world.