Individual and Small Group Tours for the United Nations: Adults: $22, Student (13 years+): $15, Senior (60 years+): $15, Child (5-12 years): $13. Large Group Tours: Adult: $400, Student (13 years+): $274, Senior (60 years+): $260, Child (5-12 years): $256. There is no fee for admission into the UN but all tours must be reserved in advance. Children under five may enter the UN, but not participate on any tour.