A "sinister, whimsical, tacky, and really orange" public art installation hidden under a Seattle bridge.

A busy cafe better known for board games than food.

This Seattle museum displays the history of the telephone through an impressive collection of telecom equipment.

Couple's personal collection of pinball machines turned public pinball museum.

A walk through the historic city center, under the streets of Seattle.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

The cardinal directions, set in stone.

There’s a hidden military meme engraved on the World War II Memorial.

This Stockholm light tower can be controlled by anyone with a smartphone.

A (slightly) grownup take on the classic retro arcade.

10,500 square feet of pinball housed in former dollar store and home to the last playable "Thunderball."

A retrofuturistic art installation in the Pittsburgh Airport.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

Where the oil industry began.

Priceless space junk on display in front of a local Dairy Queen.

This whimsical stacked cabin looks like something out of a children's book.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

The ruins of the suspension bridge hang over Kingsbury Run as a ghost of racial prejudice.

Grab a cuppa at England's first and only domestic tea plantation.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

Unique collection containing a wide and curious range of contraceptive items.