Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

The 606 is a decade in the making.

This shop for all your super spy needs hides an educational secret.

Landmark Chicago building narrowly avoided destruction.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

A display of magnificent stained glass windows is the first exhibit of its kind.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

Years of archaeology, just chillin' by the water cooler.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

A military museum and library dedicated to the citizen soldier.

Whimsical sculptures dot a woodland path surrounding their creator's old summer cottage.

Model Trains and Much More in Hamburg.

This miniature take on the Kremlin is one Dutch man's retirement project.

A surreal statue honoring Prague's favorite literary son.

A crucified and bearded female saint.

This doorless 20th-century elevator doesn't stop or slow down.

This automated sculpture of two men peeing will spell out text messages with their micturition.

A mocking tribute to the past and modern leadership of Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A Jenga-style cylindrical tower of books that appears to go on forever.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

A mythically themed self-built sculpture park.