Smithsonian's National Zoo

The Smithsonian's National Zoo is the best free family day in Washington and one of the oldest zoos in the country, set on wooded hillsides along Rock Creek in the Woodley Park and Cleveland Park neighborhoods. Admission costs nothing, but free entry passes are required for every guest, including infants, so reserve them online before you go. Pandas are the headline again: after the zoo's long-running pair returned to China in 2023, a new pair of giant pandas arrived from China in late 2024 and now live on the Asia Trail, alongside sloth bears, red pandas and clouded leopards. Beyond the pandas, the zoo's strengths are its elephants in the large Elephant Trails habitat, the great apes (gorillas in the Great Ape House and orangutans, who can travel across the zoo on the overhead O Line cables between buildings when they choose), the big cats on Lion and Tiger Hill, and the Amazonia building's rainforest and aquarium. The zoo is also a research institution, part of the Smithsonian's Conservation Biology Institute, which explains why many habitats focus on endangered species and breeding programs. The honest notes: the zoo runs along a long, steep hill, so the walk back up from the bottom is real work, especially with strollers; parts of the zoo are under renovation, including the Africa Trail area and a new Arabian leopard exhibit planned for later in the decade; and parking is paid and fills early on weekends. Grounds and animal buildings keep different hours, and both close earlier than visitors expect. Winter brings ZooLights, an evening holiday light festival. Fit: families, couples with a free afternoon, and anyone who wants green space after a museum day.

The zoo was founded in 1889, and its layout still reflects its origins as a park within a park: the landscape was planned with the help of Frederick Law Olmsted's firm, and the main path, Olmsted Walk, runs down the spine of the hill from the Connecticut Avenue entrance to the lower gates near Rock Creek. Most of the major habitats branch off this path, so the simplest plan is to walk downhill first and return uphill slowly, or arrange to leave from the lower entrance. Animal buildings open later and close earlier than the grounds, which matters for the pandas, apes and reptiles. The zoo's scientists work on the recovery of species such as the black-footed ferret and the scimitar-horned oryx, often at the Conservation Biology Institute's campus in Virginia, and keeper talks and feeding demonstrations at the zoo explain that work in an accessible way.

Visit craft: reserve entry passes online before the visit and arrive at opening, when animals are most active and the paths are cool. Head straight to the Asia Trail for the pandas, then work down past the elephants and the Great Ape House, and save Amazonia for the hottest or coldest part of the day. Bring water, since the climb back is longer than it looks on the map. If you drive, buy parking in advance. The holiday ZooLights festival transforms the grounds with lights on winter evenings; check the zoo's site for this season's dates and any ticket requirements.

Practicals: 3001 Connecticut Avenue NW. The Woodley Park and Cleveland Park Metro stations on the Red Line are each a short walk away; Cleveland Park is slightly closer and downhill, which makes it the better arrival station. Open daily except December 25. Food stands and cafes are spread through the grounds, and picnics are welcome. Allow three hours. Pair it with brunch in Woodley Park or a walk along Rock Creek.