The key to turning shifting dunes into the green oasis of Golden Gate Park.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

One of the last functioning antique elevators in Chicago.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

The 606 is a decade in the making.

"We Seceded Where Others Failed."

A museum dedicated to the history and exploration of both popular music and science fiction.

A snapshot of the city's fascinating voodoo culture.

This bridge was constructed from the rubble of the infamous Bastille.

Landmark Chicago building narrowly avoided destruction.

Orthodox church partially financed by Tsar Nicolas II.

Huge abstract sculptures of the Puerto Rican Flag.

These mansions date back to Chicago's days as a brewer's paradise.

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

A Bibliophile's Dream.

Former bath house turns gastropub.

This striking art museum holds an amazing series of curiosity cabinets.

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

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

The world's longest known cave system.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Statue dedicated to the star of an old television show.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.