- California Surf Museum
 - Oceanside - Computer Museum of America@
- La Mesa
- Firehouse Museum
- San Diego - Displays a large collection of fire-fighting equipment and memorabilia from across the USA and around the world
- Lawrence Welk Museum
- Escondido - Information about the Escondido, CA, museum dedicated to the life and music of Lawrence Welk.
- Museum of Making Music
- Carlsbad - Nostalgic look at the past 100 years of American music and the history of the music products industry. Features vintage instruments, multimedia, and interactive musical stage.
- Reuben H. Fleet Science Center
- San Diego
- San Diego Aerospace Museum
- San Diego - Experience aviation's history from the Wright Flyer to the Space Shuttle and beyond.
- San Diego Automotive Museum
- San Diego - Antiques, classics, racers, motorcycles, and more. Research library contains rare publications, photos, and film.
- San Diego Hall of Champions Sports Museum
- San Diego - Honours outstanding athletes from San Diego who starred elsewhere and those who achieved stardom for local teams.
- San Diego Maritime Museum
- San Diego - Home of the Star of India - the world's oldest active tall ship.
- San Diego Model Railroad Museum
- San Diego - The world's largest operating model railroad exhibit. This unique museum has four enormous scale model layouts depicting railroads of the southwest.
- San Diego Railroad Museum
- San Diego - Dedicated to the preservation and interpretation of railroads as they existed in the Pacific Southwest; information on train rides available on actual vintage equipment.
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