First Thursday of the month | 6:00pm-9:00pm | North Building. Each month's event features a special theme - see the website to learn more! Join us for a special evening scheduled just for adults 21 and older. Whether you bring a friend or choose to come alone, you are invited to leisurely enjoy all of the animals and exhibits, free from daytime crowds and high-energy kiddos. ID is required at the door and refreshments will be available for purchase. Tickets and Member reservations are recommended in advance.