This 49-acre zoo in the heart of the city is one of the nation’s oldest, with more than 1,200 animals. The 14-acre Nature Boardwalk provides a haven of native trees, plants and animals. 365 days a year. Open May 28-Sept. 5: M-F 10 am-5 pm, Sa-Su 10 am-6:30 pm; September-October, April-May: daily 10 am-5 pm; November-March daily 10 am-4:30 pm. Free; parking $20-$35.