We had a blast at the Adler Planetarium in Chicago the other day. Space seems to capture the imagination of everyone. They have lots of interactive exhibits and fun movies to watch.
There was a wall of post-it notes where kids wrote down what they thought they would need if they went into outer space. Some said things like oxygen and food while others asked for books and grass and music to fill the silence.
The grounds around the museum are pretty too, offering a great view of the skyline. c.