The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Former meatpacking facility turned vertical farm and sustainable business complex.

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

The world's only known button museum.

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

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

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

A hollow cement depiction of time's inexorable effect on the human body.

A Bibliophile's Dream.

A lush green oasis in the middle of Chicago.

A speakeasy takes on Chicago's drinking culture.

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

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

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

You can take a class, browse the library, or visit the lavish lair of an international men's humor society.

A science teacher's dream.

An antiquated German apothecary on Chicago's North Side.

Cemetery featuring rare glass-fronted columbarium.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.