An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

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

Hundreds of trees made from glass bottles make up this forest on Route 66.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

A hollow cement depiction of time's inexorable effect on the human body.

One of the ghostly stops along Route 66.

This massive redwood tree has a hole in the base big enough to drive through.

The largest permanent Monopoly board makes one of the longest games even bigger.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

A bizarre roadside attraction and the first instance of miniature golf in the world.

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

The ghost town that ended up on Ebay.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Less a museum than a bizarre fantasy world created by artists and engineers.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A beautiful geyser under environmental threat.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A hotel and restaurant serving as the mecca of kitsch.

The first declared National Monument in the United States.