I've been to Exposition Park more times than I can remember, but perhaps the most memorable was yesterday when I stood in the Rose Garden and watched not one, but two flybys of the Space Shuttle Endeavour on it's way to the California Science Center. While this was a once ever event that you can't duplicate, the Shuttle will be on permanent display at the California Science Center on the south side of the Rose Garden starting about the end of October 2012.
After watching the flyby, I wandered through much of the rest of the park.
The Rose Garden was in full bloom and is open all year except the winter when it's closed for refurbishing. The fountain was working, but I've seen it dry during droughts.
South of the Rose Garden is the California Science Center (formerly California Museum of Science and Industry). This is where the Shuttle will be displayed. The Center is filled with permanent exhibits, temporary exhibits, and an IMAX theater. In front of the Administration Building I noticed hand prints in concrete from actors from an old hospital TV show. At first I was confused until I remembered that this was once the Health Pavilion. There are other aerospace exhibits and aircraft on display.
West of the Rose Garden is the Natural History Museum of Los Angeles County, also filled with three floors of exhibits and undergoing a major face lift with many new exhibits culminating in a centennial in 2013.
East of the Science Center is the California African American Museum.
The south half of the park has the Coliseum and Swim Stadium still in use after the Olympics of 1932.. Also the Sports Arena where I once saw the Ice Capades and the circus, has been used as a location for many movies and sporting events.
These are the highlights but there are also smaller mini parks, lawns with impromptu ball games, and a real school.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.