To find the "unicorns of the deep" you've got to go downstairs.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

The 606 is a decade in the making.

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

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

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

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

Former meatpacking facility turned vertical farm and sustainable business complex.

This historic hotel invented the chocolate brownie.

A monument to the art of slicing people open.

An antiquated German apothecary on Chicago's North Side.

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

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

A lush green oasis in the middle of Chicago.

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

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

A wall of chewing gum moonlights as collective art.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

This 700-year-old street food market features baby octopus and soy donuts.

The 10,000 Torii shrine.

A 20-meter (65-foot) robot towers over Tokyo Bay.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.