SD 25 nests AD 41 and AD 43 and connects the Los Angeles County foothills from Sunland-Tujunga in the City of Los Angeles on the west to the City of Upland in San Bernardino County on the east. The district also includes most of the Angeles National Forest. The Foothill Freeway (I-210) connects these cities for commerce and entertainment. It includes the whole cities and communities of Sunland-Tujunga, Glendale, Pasadena, Altadena, Atwater Village, La Cañada Flintridge, La Crescenta, Montrose, South Pasadena, San Marino, Sierra Madre, Monrovia, Duarte, Glendora, San Dimas, La Verne, Claremont, San Antonio Heights, and Upland plus most of Burbank. The district includes the Bob Hope Airport and the communities of interest surrounding and using Griffith Park. The cities in the district work together to provide entertainment, business, and professional services throughout the region.