This historic hotel invented the chocolate brownie.

These abandoned grain silos and tunnels are an urban exploration dream.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

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

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

An antiquated German apothecary on Chicago's North Side.

A Bibliophile's Dream.

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

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

One-layer pyramid in Indiana.

A modern-day wunderkammer dedicated to Indianapolis history, Afrofuturism, and musical vibrations.

Tombstones carved to look like tree trunks are used for multiple generations of family members.

This old steel industry company town has a tradition of parking cars on the sidewalk so people can walk in the narrow streets.

An unknown number of cholera victims are buried in two nondescript graves.

Where hikers on the Tecumseh Trail can exchange a dirty sock for a free geode.

An opulent testament to the boom-and-bust history of industry in north central Indiana.

One of the largest collections of merchandise from the famous British sci-fi show can be found smack in the middle of Indiana.

A giant concrete egg marks this Indiana town as the "Egg Basket of the Midwest."

A giant lumpy candle serves as a beacon for this highly scented pit stop.

The lynching and burial site of America's first train robbers.

This multisensory alley has the ability to remind bustling citygoers to stop and smell the roses.

One tree's homage to soles past and present.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.