Odd, decrepit fountain honors Chicago author who had mixed feelings about his hometown.

A cabinet of curious mathematical models and old calculators.

A reproduction of earth's many biomes.

Dramatic river bend surrounds a natural red-rocked pedestal.

This mysterious hill seems to pull objects uphill.

One of the first historical sites of an alternative universe was installed in the town of Paris, Illinois—which is now home to an annual spelling bee of Kcymaerxthaereal words.

Modeled after the labyrinth in Chartres Cathedral, this small-town Indiana memorial labyrinth sits half a world away.

Take a drunken tour inside the world's largest known geode.

The spectacular collection of one of the world's best woodcarvers.

Landmark dedicated to the plight of the American Indian in the 21st century.

Annual Easter display made up of thousands of hand-painted eggs.

Deep scars on the earth left by the Ice Age.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

A Museum of Holography frozen in 1974.

Home to a protest movement, a bombing, and a dramatic change in labor history.

An eccentric park and pool.

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

A gothic church spire sits atop this skyscraper, the tallest church in the world.

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

Collapsing castle on the Hudson river was once the storage site of military surplus business.

100 massive sculptures in the Hudson River Valley.

Home of Philip Johnson, one of the 20th century's most influential architects.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Haunted Victorian house that inspired a legendary "Ghostbusters" court ruling.