Armand Bayou Nature Center is an urban preserve located in Pasadena and southeast Houston between the Johnson Space Center and the Bayport Industrial District. The 2,500-acre (10 km2) nature center is the largest urban wilderness preserve in the United States. Armand Bayou Nature Center lies along the Central Flyway, the largest migratory bird route in North America. The center is part of the Great Texas Coastal Birding Trail and one of the coastal preserves designated under the Texas Coastal Preserve Program of the Texas Parks and Wildlife Department.