A beautiful 62-acre Catholic shrine and botanical garden.

A fine, large-aperture telescope available for public use.

The only undammed section of the Columbia River in the United States has been preserved, ironically, by its proximity to the Hanford Nuclear Reservation.

Boats and fish both find their way through this massive hydroelectric structure.

This 85-foot-long table is made from a single slice of an old-growth Douglas Fir.

The oldest city park in Walla Walla is home to hundreds of birds, from wood ducks to white peacocks.

An obscure waterfall that looks like something out of a fantasy novel.

A giant milk bottle from the 1930s beckons drivers to this diner.

Protected from the elements, these Native American rock paintings have survived approximately 250 years.

An extraordinary mixture of natural beauty and man-made phenomena.

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.

A museum dedicated exclusively to the lore and history of ouija boards.

This Idaho state park boasts the tallest single-structured sand dune in North America.

Some 46,000 years ago, a volcanic eruption led to a flooding event that carved this short canyon with steep vertical walls.

The only bridge in the United States where BASE jumping is legal without a permit year-round.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Evanston's historic railroad complex saved this rail town from reaching the "end of the line."

Named for a prominent scout and explorer, this Wyoming state park encompasses a replica of an 1840s trading post, a 19th-century Army outpost, and early 20th-century automobile lodgings.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

This sandstone building is a relic of the Overland Trail.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.