Kungliga Slottet Stockholm 
We recommend: Are you a larger group of more than four adults? Buy more mysteries and you get the competition moment. The team that solved the mystery correctly and in the shortest time wins.
Players pr. group: 1-4  
Time: 2 hour
Language: English
Age: All. But to get the most out of it we recommend +8 years of age.
No one except the people in the group is involved and the experience takes place outdoors, so its favorable to wear comfortable clothes and shoes. 
Happy Hunting.