Altadena is an unincorporated area, and census-designated place in the San Gabriel Valley and the Verdugos regions of Los Angeles County, California. Directly north of Pasadena, it is located approximately 14 miles (23 km) from Downtown Los Angeles. Its population was 42,846 at the 2020 census, up slightly from a 2010 figure of 42,777. In early 2025, the community was severely impacted by the Eaton Fire.
The Theosophical Society (Pasadena) is a branch of Theosophy based in Pasadena, California. It claims to be the successor organization to the original Theosophical Society founded by Helena Petrovna Blavatsky and others in 1875 in New York City. It is the second largest Theosophical group in members and international reach after the Theosophical Society Adyar.
The Arroyo Seco, meaning "dry stream" in Spanish, is a 24.9-mile-long (40.1 km) seasonal river, canyon, watershed, and cultural area in Los Angeles County, California. The area was explored by Gaspar de Portolà who named the stream Arroyo Seco as this canyon had the least water of any he had seen. During this exploration he met the Chief Hahamog-na (Hahamonga) of the Tongva Indians.
Located in Los Angeles County, California's San Gabriel Valley, the Boy Scouts of America's San Gabriel Valley Council (#40) was one of five councils serving Los Angeles County. It was headquartered in Pasadena.
Kinneloa Mesa is an unincorporated community located in Los Angeles County, California, United States, with a population of 1,070 as of 2000. Unlike Altadena, a larger unincorporated area nearby, Kinneloa Mesa is not an official census-designated place. The area was sometimes referred to as "unincorporated Pasadena", which it technically is not as that is not an official term and the area is not a part of Pasadena. Kinneloa Mesa is on the Los Angeles County list of unincorporated areas and street maps, including those of the Los Angeles County Assessor's office which recognize Kinneloa Mesa Road and Kinneloa Canyon Road as the area's two principal roads.
The Mount Wilson Toll Road (1891–1936) is a historic roadway which ascended Mount Wilson via a vehicular passable road from the base of the foothills in Altadena. It was accessible from Pasadena via Santa Anita Avenue which drove right to the front porch of the toll house. The road is still accessible to non-motorized traffic by way of Eaton Canyon. Segments of it have been closed at various times due to landslides. A 2005 landslide destroyed 50 yards of the road, but it has since been rebuilt and reopened.
Christmas Tree Lane is a 0.7-mile (1.1 km) boulevard of deodar cedar trees in Altadena, California. The trees on the Lane, Santa Rosa Avenue, have been lighted annually as a Christmas Holiday display since 1920. The association that runs it claims it is "the oldest large-scale outdoor Christmas display in the world". Christmas Tree Lane was listed on the U.S. National Register of Historic Places in 1990, the same year it was also designated as California Historical Landmark No. 990.
Eaton Canyon is a major canyon beginning at the Eaton Saddle near Mount Markham and San Gabriel Peak in the San Gabriel Mountains in the Angeles National Forest, United States. Its drainage flows into the Rio Hondo river and then into the Los Angeles River. It is named after Judge Benjamin S. Eaton, who lived in the Fair Oaks Ranch House in 1865 not far from Eaton Creek.
The Pasadena Jewish Temple and Center (PJTC) is a Conservative Jewish congregation, synagogue and community center located in Pasadena, California, United States. Its buildings were destroyed in the January 2025 Eaton Fire.
Scripps Hall, also known as the Pasadena Waldorf School, was a large American Craftsman or Arts and Crafts style house located in the foothills of the San Gabriel Mountains, in Altadena, California, United States. It was built in 1904 as the central feature of the Scripps Estate, and is listed on the National Register of Historic Places. It was badly damaged by the 2025 Eaton Fire, with the upper school at 209 East Mariposa Avenue completely destroyed.
The Andrew McNally House in Altadena, California was the home of Andrew McNally (1838–1904), co-founder and president of the Rand McNally publishing company. The Queen Anne Style house is listed in the National Register of Historic Places. It remained a private house, until it was destroyed by the Eaton Fire on January 8, 2025.
Elmer Grey, FAIA was an American architect and artist based in Pasadena, California. Grey designed many noted landmarks in Southern California, including the Beverly Hills Hotel, the Huntington Art Gallery, the Pasadena Playhouse and Wattles Mansion. He is credited with being one of the pioneers in the development of the new American architecture in the early 20th century, with a focus on harmony with nature and eliminating features not belonging to the local climate and conditions. Grey was also a noted artist whose paintings are in the permanent collection of the Chicago Art Institute.
The Bunny Museum was a museum dedicated to rabbits that first opened to the public in 1998, in Altadena, California.
Justin Douglas Chapman is an American author and journalist, actor, musician, and politician. He currently serves as District 6 Council Liaison/Field Representative to Pasadena City Councilmember and former Vice Mayor Steve Madison. He is the author of the travel memoir Saturnalia: Traveling from Cape Town to Kampala in Search of an African Utopia, published by Rare Bird Books in January 2015. Chapman was the youngest elected member of the Altadena Town Council at age 19. He is currently attending University of Southern California and graduated from the University of California, Berkeley in 2009. He has written for over 20 publications. As a professional child actor he often performed in commercials, television shows, and movies. He lives in Pasadena, California.
The Kinneloa Fire was a destructive wildfire in Los Angeles County, Southern California in October 1993. The fire destroyed 196 buildings in the communities of Altadena, Kinneloa Mesa, and Sierra Madre in the foothills of the San Gabriel Mountains, becoming at the time the twelfth-most destructive wildfire in California's history and one of the most destructive wildfires in Los Angeles County history. The fire caused a multitude of minor injuries, one direct fatality, and two indirect fatalities.
Since January 7, 2025, a series of 31 wildfires have affected the Los Angeles metropolitan area and surrounding regions. As of January 21, 2025, the Palisades Fire and the Eaton Fire remain active, both being the largest of the 31.
The Eaton Fire is an active wildfire burning in the Altadena area of Los Angeles County in Southern California. It began on the evening of January 7, 2025, in Eaton Canyon in the San Gabriel Mountains. As of January 8, 2025, at 10:36 a.m. PST. The fire had spread to approximately 14,117 acres (5,713 ha). It is one of several fires being driven by the extremely powerful Santa Ana winds, along with the larger Palisades Fire. As of January 14, 2025, it is the fifth deadliest fire in California history, having killed 17 people.
Altadena Community Church was a United Church of Christ church in Altadena, California, built by the architect Harry L. Pierce in 1947 in a Spanish Colonial Revival style. The church was a progressive Christian and open and affirming church and was the thirteenth church in the United Church of Christ that openly accepted LGBTQ people. It was destroyed by the Eaton Fire in January 2025.
Zorthian Ranch is a 48-acre artist colony in Altadena, California established in 1946 by Armenian-American artist Jirayr Zorthian. Described as a "masterpiece of outsider architecture", much of the property was destroyed in the Eaton Fire in January 2025.
Edgar McGregor is an American climate activist and meteorologist from Altadena, California. He works for the Los Angeles County Department of Parks and Recreation as a recreation services leader. Starting in 2019, his long-term volunteer efforts to clean up Eaton Canyon and other public parks removed thousands of pounds of trash over several years. In 2023, McGregor began providing localized weather forecasts through social media and the Altadena Weather and Climate Facebook page. His warnings during the Eaton Fire in 2025 were credited with helping residents evacuate and avoid harm.
