See massive fossils that are over 200 million years old in northeastern Arizona.

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

Marta Becket's hand-painted theater in the desert.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

Four hundred granite steps were built into this massive rock by the National Park Service.

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

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

One of two side-by-side totem pole parks dedicated to educating visitors on Tlingit history and culture.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The decaying remains of a ship whose captain mysteriously disappeared.

Watch the newest land on the planet form before your eyes.

Once home to over 8,000 exiled Hawaiians suffering from Hansen's Disease.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

A tunnel of hardened lava along Maui’s famous Road to Hana.

A beautiful geyser under environmental threat.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A fitting attraction for the corn capital of the world.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.