The longest continuous lava tube in Oregon.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

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

Oregon's unexpected high desert, displaying layers of time in a colorful show.

This frequently-photographed waterfall takes only a short hike to visit.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A sweet tribute to Georgia's official state vegetable, which even has its own mascot: "Yumion."

Tour the sci-fi-esque reality of governmental disease management.

Portlandia is the second-largest copper repoussé statue in the United States.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

The house that Southern rock built now stands as a monument to one of the genre's favorite families.

Georgia's highest point was given its strange name thanks to a simple translation error.

"X" marks the spot of an echo chamber in the middle of a plaza.

One of the world's largest automobile junkyards is a unique landscape of metal and moss.

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

This small-town pizzeria won the Hollywood lottery.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

This small-town Connecticut restaurant gives each diner a free book from its vast library.