Kinki: The Google translation appears below. I researched some of your key phrases (Inferno Tour, Secret Passages) and have tried to answer your questions. Have been made in the Palazzo Vecchio "Secret Passages" and the (secret passages tour) "The secrets of" Inferno "," (Inferno Tour) How different from you do? Point of difference and held on the day of the week to tour, for such as time zone, please tell me. Secrets of Inferno--Daily tours at 12:30pm, 2:00pm, 5:00pm, except Thursday—12:30pm only. The Inferno Tour is new, inspired by the new book--INFERNO--by novelist Dan Brown [Da Vinci Code]. The cost is 4 euros. Secret Passages--November to May: Daily 10:00am, 11:30am, 2:30pm, 4:00pm; Tuesdays 10:00am, 11:30am. June to October: Daily except Thursday 10:00am, 11:30am, 2:30pm, 4:00pm, 7:00pm; Thursdays: 10:00am & 11:30am. Both are located at Piazza della Signoria, north of Loggia (a fabulous & free outdoor sculpture museum) and Uffizi Museum. Search the Internet for Palazzo Vecchio Secret Passages and Inferno and you can get much additional information. Also search those tours with TripAdvisor in the browser search bar. There are many TripAdvisor reviews of these tours. Enjoy!