I took my daughter when she was 3. She is going to be 9 this year and has gone a couple of times since. Also took my son, who will be 3 soon. They both enjoyed the museum, and even after 3 hours, they weren't ready to leave.
Fun to see fire trucks. The kids ages 18 months - 4 years really loved the play room with cute kitchen and tons of food and cooking stuff. Also a puppet theater for kids shows. They have firefighter dress up clothes with boots, helmets, etc. it is a cute playroom.
