Spent part of a day recently at the San Diego Museum of Natural History. While the skulls exhibit was real neat, not much else really stood out to wow and amaze us. I have been to several natural history museums and this was the most underwhelming one so far. That being said, we still enjoyed the visit because we like nature and wildlife type activities. I don't know that I would say it's a must see while in San Diego but if you are going to Balboa Park and want to hit several of the museums, it's worth the time and money because the money goes to a good cause.