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

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

This quiet park's strange sedimentary spires were named after Kodak's color film.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

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

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

The largest wooden building in the world now houses a fascinating collection of aircraft.

10,000 flowered plants bloom in the City of Roses.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

This large cemetery is known as the museum of granite sculptures.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

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

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

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

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Three prestigious academic collections come together to create a world-class natural history museum.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

An eccentric inventor's castle home with its own indoor weather system.