Apartment complexes built into huge repurposed natural gas tanks.

Baroque celebration of the end of the Great Plague of Vienna.

A spherical "micro-nation" in the heart of Vienna.

This former insane asylum now holds a pathological anatomy museum.

The beautiful baroque library of the Hapsburg empire.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Looming communist pillar with a Czech twist.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Macabre astrological automaton clock dating to the late 1400s.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

A surrealist timepiece by the artist of melting clocks.

A mechanized clock where a man fights off a dragon, crab, and rooster.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This glamorous old building is said to have inspired the Tower of Terror.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

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

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This historic hotel invented the chocolate brownie.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

The palatial McDonald's that inspired Wesley Willis.

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

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