We bought the calendar for our 9 year old son, because we wanted to have nothing sweet. As you know it from Playmobil, this toy is also very detailed. The alarm system is really the hit. Stupid thing is that you can see on the large packaging that puts part behind which door. So remove repackaging necessarily advance! Here it is also seen on the assembly instructions for the museum space, which where is the calendar. That's really stupid. Our son was the room of course, immediately set up, because you then yes the parts (figures etc.) builds and supplemented every day in this area. But this is also the eizige disadvantage.