This expansive bridge in the Canadian wilderness was originally just built for friends.

San Francisco's newly reopened hands-on science museum.

A brief journey through early 19th-century pioneer life across Linn County.

This massive redwood tree has a hole in the base big enough to drive through.

Experience Larry Spring's self-taught "common sense" laws of physics.

A trash dump made beautiful by nature's power.

This natural marble cave is one of only five national monuments in Oregon.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

This little museum has an exhibit devoted to the elusive forest denizens.

The flow from this waterfall sometimes comes out of springs below its rim.

A simple plaque remembers a California island massacre that claimed more than 100 lives.

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

An optical illusion found amid a logged redwood forest.

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

Canyon walls shrouded in ferns.

Folk art crafted from discarded vegetable crates.

Commonly referred to as the most photographed Victorian home in the United States.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This nature center has one of the largest collections of native raptors in the Pacific Northwest.

At the edge of the high desert, California's second-largest natural lake is home to a unique subspecies of trout adapted to its alkaline waters.

Where the writer penned his famous story about a jumping frog.