The only surviving piece of a submarine said to be the most decorated vessel in U.S. history.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

This former coal gasification plant found a curious second life as a popular public park.

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

A colorful architectural gem in Seattle’s uniquely modern Central Library.

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

A community gathering place that once housed half-ton tanks and the World's Fair.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Elevated freight railway turned wildly successful urban park.

A restored Shell gas station from 1937 that includes a tow truck, the original gas pumps, and the original office.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

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.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

The Denny Substation has been called "the coolest substation in the world" and sits in a densely populated Seattle neighborhood.

The longest and widest floating bridge in the world.

A normal, unassuming pedestrian overpass has been the demise of many, many trucks.

The second-largest (of only two in the world) large particle collider is the underdog of experimental physics.

A formerly abandoned mental institute, now back in business.

A tribute to the hard-working men and women of Grumman, who crafted F-14 fighter jets.