One of the largest burial mounds in the Netherlands and Belgium.

A sliver of nostalgia in Seattle's Viretta Park.

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

A hand-built folk art installation covered with messages of God's love.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

The birthplace of a titan of American cinema.

Tirelessly maintained by a Wisconsin man named JFK.

A trailblazing sovereign nation tucked in the American state of Wisconsin.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

Shop selling 500 flavors of soda has something for everyone.

Abandoned silver mine strewn with wrecked and twisted structures.

The remnants of an early American attempt at missile defense.

Odd outsider art installations surround a Gold Rush-era ghost town.

An homage to everyone's favorite prehistoric cartoon family.

During the 1990's nearly all of the world's LSD is thought to have come from the operators of the lab once located in this missile silo.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

This abandoned horse racing track was an exercise in hubris from its inception.

A shady solar power system that couldn't hold up to the harsh desert conditions.

Built from oil field parts and resembling a teepee, this abandoned mid-century church is hoping for a comeback.

This failed condo development was reborn as a street art hub.

Despite repeated attempts to make it work, this former mining town is now nothing but dust and memories.