Mentioned by TravelMamas.com
15 Best San Diego Attractions for Kids | Family Activities in San Diego
"The location of the first-ever World’s Fair, Balboa Park feels like a grand old European boulevard. Seventeen museums, a multitude of gardens, five playgrounds, a carousel, a train for children, the famous Old Globe Theatre, and more reside here. A hit with the preschooler set, the San Diego Model Railroad Museum houses one of the largest indoor model train displays in the world."