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

An enormous, inside-out glass globe built in 1935.

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

This historic hotel invented the chocolate brownie.

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

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

A science teacher's dream.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

An antiquated German apothecary on Chicago's North Side.

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

A Bibliophile's Dream.

A monument to the art of slicing people open.

A speakeasy takes on Chicago's drinking culture.

A lush green oasis in the middle of Chicago.

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

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

The world's longest bridge fountain has hundreds of nozzles that create a beautiful, illuminated spectacle.

Its humdrum facade only adds to its electrifying appeal: a rooftop with panoramic views of a shapeshifting metropolis.

Buy your fish and have it cooked to order in this bustling, eight-floor seafood market.

A remnant of Korea's colonial past lies forgotten in a hip neighborhood in Seoul.

A chilling monument to Korean patriots who resisted the Japanese occupation.

About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

A bright and wacky exhibit answers every question you may have had about human excrement, flatulence, and more.