A Roman-style column in Oregon hides a spiral staircase inside.

100-year-old shipwreck you can walk up to at low tide.

Where Nor'easters go to die.

Right here, members of the Lewis and Clark expedition boiled ocean water to make salt.

Ride a mechanical corn dog at the alleged birthplace of America's favorite deep-fried wiener.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

Two massive rock outcroppings on the Oregon coastline.

Only known mainland rookery of the threatened Stellar sea lion.

Fifty years after a “blast blasted blubber beyond all believable bounds,” this idyllic natural area commemorates the carnage.

According to legend, this rock represents a young girl trapped by an evil ocean spirit.

This 19th-century museum inside of a lighthouse is only accessible during low tide.

These cinderblock farmhouses were actually World War II radar stations in disguise.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

This massive redwood tree has a drive-thru tunnel carved out of its trunk.

Canyon walls shrouded in ferns.

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

A vaudeville performer mounted this hollowed-out redwood log onto the chassis of a truck, and toured the country spreading a message of conservation.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.