Mentioned by Culture Trip
Must-Visit Attractions in San Diego
"A sunken butterfly garden, the San Diego Zoo, museums, gardens, the California Tower – this 1,200-acre (486ha) park contains a slew of attractions. It was built in 1868 and hosted the Panama-California Exposition, which celebrated the opening of the Panama Canal, in 1915. Key museums include the San Diego Air & Space Museum, the Museum of Us (formerly the San Diego Museum of Man), the San Diego Museum of Art, the San Diego Natural History Museum, the Timken Art Museum and the San Diego Model Railroad Museum."