A lush green oasis in the middle of Chicago.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A speakeasy takes on Chicago's drinking culture.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

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

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

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

A Japanese temple, old German townhouses, and public chess tables offer a peaceful escape from the bustle of the North Side.

Walk through Czech history in Prague's largest graveyard.

Countless grotesque faces stare out from this eerie Prague art wall.

A Jenga-style cylindrical tower of books that appears to go on forever.

Macabre astrological automaton clock dating to the late 1400s.

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

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

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

Costa Rican accommodation resembles a crash site, but with a nice balcony.

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.

A popular 19th-century natural landmark is now hidden within a sprawling forest.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

At the United Kingdom's only residential library you can sleep among the books.