When I lived in California we had two dog parks close to my house. One was a small fenced aread with a lot of things to climb and crawl through. The other park was a large field where the dogs could actually run and chase frisbees or tennis balls. We used to go to the dog park 3 – 4 times a week.
Ever since we moved away I have not been able to find any kind of dog park anywhere around here. There is no place where I can safely take my dogs off the leash and let them run. I really miss that.