The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

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

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

One of Chicago's last seafood smokehouses perfects a dying breed of fishcraft.

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

Chicago's North Park Village was once the largest municipal sanatorium in the country.

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

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

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

The beloved home to all publications indie, erotic, and punky.

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

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

An antiquated German apothecary on Chicago's North Side.

A lush green oasis in the middle of Chicago.

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

One of Jeff Koons’s largest sculptures and his first commemorative work.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

The first green space constructed on an elevated viaduct.

France's national museum of scientific and industrial instruments.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

France's most famous cemetery, with some of its most curious tombs.

This massive library holds what was once the largest book collection in the world.