A gathering of green robots at the Googleplex.

This airfield played a key role in both World War II and the Cold War.

An Aladdin's cave of old Silicon Valley tech.

People come from across the globe to swim in this lake believed to have healing properties.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

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

A controversial memorial at the place where Captain Cook met his violent end.

This black shoreline is made up of exploded lava particles.

A giant bisected onion dome remembers the Iraqis who died in the Iran-Iraq War.

An ancient sanctuary that has long been a holy site for the Chaldean Christian Church.

This cascade of mineral-rich hot springs and waterfalls is an oasis in the Jordanian desert.

An ancient capital city that dates back 3,000 years and harbors many surprises.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

The last bastion of Roman presence north of the Alps looms over a German town.

For roadside fast food, pull over at the giant orange.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This rare tortoise skeleton has been hanging around the downtown Los Angeles museum for over a century.

The final resting place of a space program monolith, soon to be unveiled again to the public.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.