Zoológico de Brasília, Wildlife conservation center in Brasília, Brazil

The Zoológico de Brasília occupies 1.397 km² at the end of Via L 4 Sul in the Asa Sul, holding 826 animals, among them 185 bird species. Its grounds contain the Natural Sciences Museum, a butterfly garden, artificial lakes, camping and picnic areas, and 30,000 m² given over to growing animal feed and parking. The Natural Sciences Museum stands near the Serpentário and the administration, and keeps animals preserved by taxidermy, osteotechnics, liquid medium and skin tanning.

Founded in 1957 as a Zoo-Botanical Park, it came into existence three years before Brasília was officially inaugurated as the capital. This early creation made it a pioneering conservation project for the newly established city.

The zoo's official name honours Sergeant Sílvio Delmar Hollenbach, who on 27 August 1977 entered the ariranha enclosure to rescue a 13-year-old boy who had fallen in. He handed the boy to safety but was pulled into the water by the giant otters and died three days later from generalised infection. The zoo was renamed Jardim Zoológico Sílvio Delmar Hollenbach in his memory.

The zoo sits at the end of Via L 4 Sul in the Asa Sul, with parking areas on site. Pets are not allowed inside the Natural Sciences Museum. Camping is possible in the area run by the Fundação Jardim Zoológico de Brasília, and guided night visits, the Zoo Noturno, are offered alongside the daytime route.

The zoo also manages the Riacho Fundo Wildlife Sanctuary, a large area dedicated to regional conservation efforts. This additional space demonstrates the facility's broader commitment to preserving local ecosystems.