A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This church on a Tohono O'Odham reservation has stood since 1797.

Quite simply the largest tree in the world (by volume).

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

At the time of its completion, it was the tallest dam in the world.

An unusual geological feature towers over the remains of a dark episode in United States history.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

One of the largest, oldest, darkest, quietest motel rooms in the world.

This museum glorifies the humble potato.

This giant temperature attraction created some giant electric bills.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

A museum dedicated to the decorative arts from the 16th through 19th centuries.

This mysterious petroglyph evokes the ancient swastika symbol but was later vandalized with the more troublesome Nazi one.

Ancient human, animal, and geometric figures drawn in the earth.

A regular looking rock with an unbelievable history.

Erroneously called the world's tallest flagpole, this landmark is devoted to "good neighborliness."

Huge otherworldly domed rocks on the shore of a deadly lake.

Burping, gurgling geothermal mud pots by the Salton Sea.

A hand-built folk art installation covered with messages of God's love.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.