The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

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

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

These disused steel furnaces are now haunting ruins that may one day be a national park.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

Within this beautiful Pittsburgh cemetery, a unique headstone bears witness to one man's eternal love for Jaws.

Where the oil industry began.

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Visitors to this library are in for a real-world education in modernist architecture.

A replica that won't float away.

The location along the shores of the Great Salt Lake of what was once called, "The Coney Island of the West", now sits barren due to arson and time.

At 207 feet, one of the world's longest continuous escalators.

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

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

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.