San Francisco's newly reopened hands-on science museum.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

A psychedelic labyrinth on the San Francisco bay.

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

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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

The most loyal of little dogs, or a Victorian era publicity stunt?

Experience what life was like in Ireland during the Viking and medieval ages.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

This giant temperature attraction created some giant electric bills.

The rusting remains of the largest assembled WWII fleet on the West Coast.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

Thousands of crosses and markers for soldiers who lost their lives in Iraq and Afghanistan blanket a California hillside.

One man's quest for the ultimate road trip vehicle.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

North America's largest accredited model railroad museum.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Lucha Libre (Mexican Wrestling) themed taco shop.

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

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.