The Oakland Museum of CA is re-opening after a large remodeling, and is celebrating this weekend with a free celebration event from Sat. to Sun. They are even staying open for 31 hours straight, in honor of CA's status of being the 31st state.
If you have any interest in CA history and art, and our unique contributions to the world, this museum is well worth the visit. You can reach it easily from the Lake Merritt BART station.