I was very anxious to visit the Franklin Institute as it was listed in my US Edition of 1000 Places to See Before you die. This is a place that you need to visit either right when they open or close to the end of the day. My only complaint is that they have a select number of interactive exhibits in each section and there were just so many kids that it was impossible for a single person to get a chance to really enjoy any of the really fun activities. I was able to go through the Human Heart (highly recommend) and a few of the less popular games. G if you have children as they will have a blast.