Discovery Green Discovery Green is a public urban park in Downtown Houston, Texas, United States. Opened in 2008, Discovery Green 11.78-acre (47,700 m2) is located on Avenida de las Americas across from the George R. Brown Convention Center and the Hilton Americas Hotel, adjacent to Toyota Center. The park includes a lake, bandstands and venues for public performances, two dog runs, a children's area and multiple recreational areas.[1] The park was principally designed by the landscape architecture firm Hargreaves Associates.[2]