Exploratorium and Pier 39

Today Papa and I went to a place called Exploratorium in San Francisco. It was the first of all 'learning by doing' science museums in the world, inspiring others like Questacon in Canberra to be built.
There were lots of cool exhibits. They included a DIY marble run, a geyser that went off every 20 minutes, and an air cannon that fired a beach ball into the air. My favourite thing was a magnetic sand exhibit with two big magnets in it. The magnetic sand would become spiky but felt like fur. You could make a bridge out of the sand and it would hold! We then went outside for other exhibits. There was one where you could make a keystone bridge. A keystone is the final step in making a bridge. You would have blocks and you would make a bridge from them leaving the middle empty. You would then put in the keystone, and the bridge would hold itself! It works because it pushes the wait to both sides evenly. We made a video of me walking on it.

We then went to Pier 39 to see the Sea Lions again. This time however there were barely any! There were about 8 of them in total. Last time we saw them (in early May) there were hundreds!

We then went to Fisherman's Wharf and looked at the shops. We bought some donuts and took an Uber home.Read more