Travelers are voting Maritime Museum of San Diego, Balboa Park and USS Midway Museum as the best of 4 museums in San Diego. There are 2 museums in Oceanside a city just 30 km from San Diego and 2 museums in Newport Beach City which is 71 km distant. The most popular of these are Balboa Park in Oceanside and Los Angeles Maritime Museum in Newport Beach City. You can find 106 museums in California and 1200 museums in the country of United States. Our members favorite in California is RMS Queen Mary and Metropolitan Museum of Art is the top pick in United States. Want more? Check out our map of museums in San Diego.