This abandoned boat was left in place thanks to its rotting beauty.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Dozens of rockets and missiles are on display outside a testing facility in the Utah desert.

This U.S. natural reserve is an ancient spiritual place and rock climber’s paradise.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

This was the first homestead registered after President Abraham Lincoln signed the Homestead Act into law.

For one month, the fields and skies of Gibbon, Nebraska, come alive with one of the largest gatherings of sandhill cranes in North America.

An obelisk commemorating Lincoln's role in connecting the coasts.

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

This mansion was made famous by its colorful cast of owners and location along the Sante Fe Trail.

This otherworldly church spire reaches up toward the heavens.

A remarkably opulent mansion with a tragic history.

Stand at the point where the two mightiest rivers in the United States converge.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

Where Saint-Martin ends and Sint Maarten begins (or vice versa).

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

From this scenic rockface, you can still see the paths Western pioneers followed.

A perfect circle of 24 mysterious holes dates back to prehistoric times.

The world's first aircraft factory has been hiding inside an automobile plant for almost 80 years.

The childhood home of the Wright Brothers in Dayton.

This monument is dedicated to those lost on June 6, 1944, in the town with that day’s highest per-capita casualty rate.

The tallest waterfall in West Virginia.

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