(Left) Detail from a newly updated map of downtown Chicago’s Pedway system. Click on image to view larger version. January 10, 2014 – A new map aims to simplify 40 blocks of mostly underground passageways beneath downtown Chicago.

The Chicago Pedway system connects nearly 50 Loop buildings, train stations, and parking structures. The city published a map early last year but a professional tour company says its map is better. Chicago Detours shared its map on Thursday, an updated version of a map they published in 2012.

Amanda Scotese, executive director of Chicago Detours, designed the map.

“While other maps of the Pedway exist,” says Scotese, “they do not outline where exactly to access the Pedway, which is one of the most confusing aspects of the system.”

The new map includes basic advice, such as how to find the Pedway, as well helpful details like when various sections are open, which sections are not heated or air conditioned, location of food courts, a new part of the Pedway near Aqua, and the location of an abandoned Pedway.

(Right) After entering a building, look for this symbol near an elevator or escalator…

The worst day for exploring the Pedway, advises the map, is Sunday, when many parts are closed.

Scotese was a tour guide and guidebook researcher for a travel company before starting Chicago Detours. According to a news release, the company is comprised of educators, historians, artists, and storytellers.

• Read the map: Chicago Pedway Map
• More info: Chicago Detours