During my internship at EastSeven Berlin Hostel, I (Luka, 13) visited the German Spy Museum. I liked it very much. I was there for about 1.5 hours and I haven’t seen everything. The museum is suitable for everyone from the age of 6. My highlights were the laser grid to climb through and the password hacker.
The admission fee is 8 euros for children from 6 years, adults charge for 12 euros. The museum is open daily from 10 a.m. to 8 p.m. It is centrally located at “Potsdamer Platz” subway station. More information at https://www.deutsches-spionagemuseum.de/