An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

The seat of the lost Ryukyu Kingdom has survived numerous fires and wars over the centuries.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

This dilapidated ship carcass covered in trees is a striking sight.

Sleep beneath the big screen at this old-school movie theater.

Stones speckled along Harris Avenue reveal hidden nuggets of the past.

Former farm staffed by mental patients is now a public park.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

This Seattle joint serves food inside an old train car once used by FDR.

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

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

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

This small hut in the middle of a parking lot was once the wooded sanctuary of the 'Hermit of Montrose.'

A local landmark with generations of spraypainted messages, and more being added each day.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

In the absence of a Chinese-language newspaper, for years the community posted daily updates on this simple bulletin board.

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

Remnants of a forgotten 1920s speakeasy and Prohibition-era murals were discovered in its basement.

This monument remembers the first Japanese Americans forcibly relocated during World War II.

A piece of Seattle’s historic Chinatown preserved inside a modern museum.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

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

The first park built over a freeway is a brutalist masterwork.

A wall of chewing gum moonlights as collective art.