• Time-slot tickets only, in 15-minute windows, and latecomers are not let in, so book online and arrive on time
• Laser maze on the first floor with two courses, three difficulty levels each and a mode for wheelchair users, included in the ticket
• Plan 1.5 to 2 hours, with hands-on stations in every section, from secret inks to a password hacker and a disguise photo corner

Built on the former no man's land of the Berlin Wall at Potsdamer Platz, the museum traces spying from ancient ciphers through the Cold War to cyber espionage. Kids send Morse code, encrypt messages at a digital Enigma station, test secret inks in an agent lab and hunt for hidden bugs. The two-course laser maze gives each player one minute and an infrared video of the run.