This replica of the Greek structure is in the heart of Nashville.

This spectacular track has run continuously since 1882.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

This historic national park is covered in the stunning ruins of red rock pueblos.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

An obscure waterfall that looks like something out of a fantasy novel.

A common entry point to the Griffith Observatory trail holds its own wonders.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

Bad farming practices caused this unnatural natural wonder.

Even Henry David Thoreau found this glacial pothole irresistible.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

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

Half of a waterfall goes into the river while the other half seems to disappear.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.