A massive sea stack famous for its appearance in The Goonies.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

This church on a Tohono O'Odham reservation has stood since 1797.

Visitors to this public park will also find the ruins of an old western fort.

Legend says train robbers stashed their gold within the depths of this unusual cave.

The world's largest military aircraft cemetery.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

Ghost town with a beer-drinking goat for mayor.

Mysterious glowing orbs float through the desert night.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This supermarket is suspended 25 feet above an interstate highway.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

Ice cream stand, snack bar, and time capsule of milk conveyance.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

The Boston square dedicated to the dark poet who was born nearby.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

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

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

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