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

Over 1,000 pieces of one of the most niche art objects imaginable: the glass paperweight.

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

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

These abandoned grain silos and tunnels are an urban exploration dream.

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

The faint remains of a Polish news empire still linger.

This titanic Catholic church in Chicago is also a refuge of the fictional cult-favorite wizard detective Harry Dresden.

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

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

Assemble a masterpiece at the first and only North American school exclusively dedicated to mosaic art.

No one knows how many bodies are in this vault in a Chicago public park.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

This landmark of the Chicago silent film industry may not be in the picture business anymore but it still stands proudly.

Former bath house turns gastropub.

The 30,000-volume library is one of the world's most impressive poetry collections.

Where Cusack's record store from the film "High Fidelity" was located.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

An enormous park-like oasis, full of famous Chicagoans' graves.

A Bibliophile's Dream.

A monument to the art of slicing people open.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.