The secret city built by the Manhattan Project.

The LSU mascot lived on the college campus in one of the most impressive tiger habitats in the country.

A large stone map of Arkansas awaits visitors to its highest point.

The highest point in Indiana is curated by an Eagle scout but may be in danger of losing its record to a nearby garbage pile.

In this relatively flat state the highest point is an honored place.

As state high-points-by-elevation go this spot is one of the lowest, but for years it was also the hardest to climb.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

The highest peak in the state of Vermont has some interesting features.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

These once-beautiful historic graveyards are set against the barren Virginia City hills.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

Towering basalt columns, a creation of fire and ice.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

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

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

Ancient pueblos built into the base of a natural canyon wall.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

This curiosity shop contains a museum filled with bizarre, unique objects.