Lions, and Tigers, and Panda Bears: The National Zoo is a part of the Smithsonian Institution, and therefore offers free admission... oh my! This 163-acre park is located in the Woodley Park Neighborhood and is open 364 days a year. Its meandering trails will bring you face-to-face with thousands of animals and hundreds of species, originating from the African Savanna to the Amazon River. However, if you would like to see some wild animals in their natural habitat, we'll have to point you in the direction of Congress! Located at 3001 Connecticut Ave NW, and open 7 days a week from 9am-5pm.