A dating app. A stranger with arctic blue eyes. A meeting in Lincoln Park on Halloween. This self-guided ghost escape game drops you into Chicago's most haunted park, where thousands of bodies still lie beneath the grass.

Solve 10 puzzles at Lincoln Park's darkest landmarks. Decode ciphers at a mausoleum that survived the Great Fire. Crack a code on Lincoln's monument. Outsmart ghouls near the zoo where Victorian ghosts still appear to staff.

Download the Questo app, activate with your booking code, and start at the Chicago History Museum. No guide needed, just your phone, clues and a map in the app. Play as a couple or team of up to 3. Best after dark.

Discover why the Couch Tomb was too expensive to move, where a real pistol was hidden inside a cottage plumbing pipe, and which conservatory plant smells like a corpse.

About 80 minutes, 10 stops, 2.7 km through Lincoln Park. Available every day. Perfect for thrill-seekers and anyone who likes their history haunted.