Former hotel turned into haunted playground.

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

A monument to the art of slicing people open.

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

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

Parking lot where a Chicago mayor was inaugurated under very sketchy circumstances.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

This landmark of the Chicago silent film industry may not be in the picture business anymore but it still stands proudly.

Orthodox church partially financed by Tsar Nicolas II.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

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

First planned industrial community in the United States.

All of Chicago's wood-paved streets are long gone but two alleys remain.

A century-old network of freight tunnels underneath the city's historic business district.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

A one-of-a-kind collection of a unique medium.

Once a purveyor of Santeria supplies, religious products , and household sundries, now closed.