Great zoo but huge and very difficult to navigate....

Great zoo but huge and very difficult to navigate. In attempt to "follow" the map, we circled the same area three times and still never found the tigers. Very hilly with many stairs. Even though there are a couple elevators, it is not an easy zoo for wheel chairs or strollers Marking a footpath would be extremely helpful. Disappointed there are no more panda bears. The best monkey habitat I've ever seen but not all animals have as impressive 'homes'. Aviaries leave a bit to be desired. Offering the bus tour free of charge us a nice perk to help cover the expanse though we did not have time to ride it. Many exhibits were closed or animals had been removed and the aerial tram was closed. Overall, this zoo was OK but certainly didn't live up to it's reputation or price.