Explore Chicago’s dark past on this free and guided walking tour, where you'll hear gruesome and true tales from our city’s history while exploring creepy and bloodied sites like the thought-to-be haunted Congress Hotel, Death Alley and the 1900s red light district. This tour is not for the faint of heart, or queasy of stomach, so it’s probably best to leave the kiddos out of this one. The tour begins in front of the Congress Plaza Hotel and lasts two hours. Advanced booking required.