Original, a host of experiences to do. The little ...

Original, a host of experiences to do. The little ones manipulate and are amazed, the big ones, like my son, a student engineer, are delighted to see the practices put into practice.
For me, non specialist, a universe full of surprises, in many areas: sound, vision, mechanics, etc ...
We arrived at 1pm and did not have time to explore everything before the 5pm closing time.
Do not miss it in your visit to San Francisco!