This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The largest permanent Monopoly board makes one of the longest games even bigger.

A tourist attraction founded around a slumping cabin.

The seamy, underground secrets of Portland's criminal past.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

A museum dedicated to the history and exploration of both popular music and science fiction.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A wall of chewing gum moonlights as collective art.

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

This Art Deco masterpiece has stood in for some of the most famous buildings in comic book history.

The colorful, smiling concrete silos of Vancouver.

Come for the speed, leave in love with the desert.

Visitors to this library are in for a real-world education in modernist architecture.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

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

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.