Christmas Tree Lane is a 0.7-mile 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 Christmas lighting spectacle in the United States". 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.