At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

This softly rounded mansion was built without corners not to avoid evil spirits, but to make them more comfortable.

The only castle in North America to ever house European sovereigns.

This old-school café is famous for serving coffee, chilaquiles, and the Cuban Revolution.

A bronze statue of the famed Prussian naturalist commemorates the year he spent in Mexico.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

This one-window stand has been home to a giant vat of slowly simmering meats and an array of unique tacos for almost 50 years.

A popular European tradition makes its way to the states on one of America's most famous bridges.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

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

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

In one Chicago park, a trio of werewolves are waiting to devour their fallen brethren.

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

In a quiet north Chicago neighborhood rests a stunning relic of the golden age of earthenware design.

A science teacher's dream.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

Cemetery featuring rare glass-fronted columbarium.

An antiquated German apothecary on Chicago's North Side.

An enormous park-like oasis, full of famous Chicagoans' graves.

Internationally known record store and purveyor of "dusties."

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

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

A Bibliophile's Dream.

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