This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

Penn State's giant bug collection.

Considered by many to be a local landmark and treasure.

This tree has witnessed nearly 1,000 years of history.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

This 1800s former railway tunnel is now part of a heritage walking trail.

More than 350 million years ago, western New York was covered in a vast sea. Today, you can dig up the remains of the plants and animals that lived there.

George Lucas donated this park to honor the birthplace of his two biggest movie franchises.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

The longest spit in the United States ends at a lighthouse in the Strait of Juan de Fuca.

Tour the original street level of Port Angeles, buried underground in 1914.

Stroll through a wonderland of stupendous moss-covered trees.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Rustic natural hot springs in the deciduous rain forest.

Shoreline strewn with the remains of ghostly fallen trees.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

A tribute to the Nirvana frontman hides beneath the bridge that was the singer's beloved hangout spot.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

A giant roadside black bird marks the location of this eclectic local mall.

This bridge provides safe passage for squirrels.

This charmingly homemade amusement park has been growing for 40 years.

This extinct shield volcano is the lightning rod of the Cascades.