1. Organize your group in no less than 6 visitors, and no more than 30. Remember: guided tours take place on Monday’s morning.
2. Make your request with at least two weeks in advance by means of an official letter. The letter must include the following requirements:
   • Name of the institution sponsoring the visiting group
   • Name of the person in charge of the group
   • Number of visitors
   • Date requested
   • Brief text explaining the reasons for their interest in visiting the ICN
   • Topic or specific area of interest (optional)
   • Contact details: name, e-mail, and phone number,