The four tall pillars once marked the entrance of the historic Seattle church that fought for women's suffrage and civil rights.

This unique Seattle structure was designed to be the greenest commercial building on the planet.

This sculpture forces visitors to confront their relationship with space.

Activists are fighting to preserve these unfinished highway ramps as a tribute to the citizen revolt that halted their construction decades ago.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

Fossils, railroads, and waterfalls!

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

Few other hotels can rival the grandeur of the Castle in the Rockies.

The granite head appears to be deep in thought and half buried in the ground.

This massive and unusual rock formation near Okotoks is the world's largest known glacial erratic.

A controversial blue hoop has been puzzling freeway drivers since 2013.

Decorated by local artists, the city's utility boxes have become three-dimensional canvases.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

A herd of colorfully painted bovine statues can be found in the middle of "cowtown."

One of the last remaining buildings from one of Calgary's earliest businesses.

The New Central Library is a masterpiece of contemporary architecture in the midst of downtown Calgary.

Eclectic musical collection ranging from hurdy gurdies and orphicas to the Rolling Stones Mobile Studio.

A Victorian garden in a harsh climate at the border of the prairies and foothills of the Canadian Rockies.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

America's first federal monument.

Once forgotten and built over, this historic Black cemetery now houses a poignant memorial.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.