A collection of animals gifted to the city by pharmacist, Richard Knight, began what is now the Oregon Zoo. Occupying 64 acres in Washington Park and providing shelter for more than 1000 animals, the zoo has become one of the state's largest attractions. Animal habitats replicate natural environments, and the zoo works diligently to protect endangered species and prevent threatened ones from becoming extinct. Attractions within the zoo include sections that mimic the terrains of Africa, Alaska, the Amazon forest and the Savannah. You'll also find areas dedicated to bats, insects, mountain goats, elk, penguins, big cats and Asian elephants. Great for the entire family. The zoo opens an hour early (8am) from Memorial Day weekend through Labor Day.