The large collection of pre-Columbian pottery might make you blush.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

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

Huge stone depressions which may have acted as an Incan agricultural experiment.

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

The unbelievably opulent home built for an infamous newspaperman.

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

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

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A spiritual vortex among the red rocks in Sedona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Race through the maze, get your name on the sign.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This black shoreline is made up of exploded lava particles.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

The only castle in North America to ever house European sovereigns.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Part bookstore, part café, and part forest.

The world-record holder for the longest bridge stretching continuously over water.