This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

Designed by Alfred Caldwel, this landscape showcases his vision of a native garden.

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

Combination beer garden and music venue in the heart of Wicker Park.

A European-style bath house in Chicago.

Beloved bar home to musicians of all eras and reputations.

A Museum of Holography frozen in 1974.

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

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

A century-old network of freight tunnels underneath the city's historic business district.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

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

This historic house museum that celebrates one of the world's most influential social reformers is also one of the most haunted locations in Chicago.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

These pretty kitties killed and ate as many as 135 railway workers.