Along the Outback Scenic Byway, adjacent to hot springs, this human-made geothermal feature takes unexplained breaks.

Rushing water plunges over a 100-foot drop created by an ancient lava flow at this majestic waterfall.

Here, cows that make vodka are treated like celebrities.

At the base of Steens Mountain resides an otherworldly desert.

A botanic garden full of trees twisted into fantastic shapes and positions.

A sprawling cave network created by a lone lava tube.

This natural marble cave is one of only five national monuments in Oregon.

Two massive rock outcroppings on the Oregon coastline.

This strange hill on Old Fort Road where gravity works in reverse has been fascinating locals for years.

Not-so-fearsome tiny trolls live under this wooden train trestle in Portland.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

This covered bridge was used by both Union and Confederate troops during the Battle of Gettysburg in 1863.

A smaller model of the Da Vinci sculpture that took 500 years to come to life.

Metal monsters made from repurposed materials lurk alongside this Pennsylvania road.

One of Gettysburg’s least visited battlefield memorials is off the beaten path, but worth a visit.

Catch a ride through the Pennsylvania countryside on this historic narrow-gauge railroad.

One of Philadelphia's largest murals resides hidden under this bridge.

A planned settlement in Pennsylvania once housed the aristocratic refugees of the French Revolution.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.

An outlandish shoe shaped house built by an eccentric millionaire.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

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