This 41,000-acre wetland complex is the largest marsh in the interior of the United States.

Curious rock formations in a tiny Kansas state park.

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

The filming location of a shark attack in Steven Spielberg's famous shark movie.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

The ruins of this Alaska gold mine form a gorgeous ghost town.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

Featuring the the longest lift span of any vertical-lift bridge in the world.

One-time largest man-made structure in the world will be a park in 30 years.

Final resting place of two dozen New York City harbor ships.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

Cannon designed to fire an atomic warhead.

A diverse, expansive nature preserve in northeastern Kansas.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

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

The beautiful behemoth is one of the largest trees of its kind in the United States.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

A remote crossroads honoring a fallen talent.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.