Every drop of water in this 27-mile long reservoir was pumped up from the Columbia River using power from Grand Coulee Dam.

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

A large AIDS Memorial Pathway art installation provides a moment for quiet contemplation in this public park.

With its vaulted ceiling and gilded details, this University of Washington library would feel right at home inside an old palace.

Chevron maintains one “Standard” brand station per state so it doesn’t lose the trademark.

Golden Gate Park's historic collection of plants.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

Legend says this sacred tree was a gift from goddess Athena.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

This bridge provides safe passage for squirrels.

Bird dung painted this huge boulder which in turn inspired the name of a city.

The large fjord lake is thought to be the home of "Ogopogo," a giant sea serpent.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

The oldest continuously occupied public building in the United States.

A tunnel with windows, so you don't miss out on the impressive views.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

The oldest farmer's market in America is so ancient it was approved by the King of England.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.