Affluent neighborhood in western Los Angeles, California. Sunset Boulevard is the area’s principal thoroughfare. Holmby Hills, Bel-Air, and Beverly Hills form the “Golden Triangle” of Los Angeles’ priciest and most exclusive neighborhoods. Many of the estates in Holmby Hills boast panoramic views of the entire Los Angeles Basin. Many high-level entertainment industry executives, such as Interscope Records founder Jimmy Iovine, television producer Aaron Spelling, and Playboy founder Hugh Hefner (whose home is better known as the Playboy Mansion), reside or resided in the area. The area gained a significant amount of notoriety as it was home to the legendary Walt Disney and Humphrey Bogart. “The Ultimate in Residential Estate Development.” Zoning for the community, which straddles Sunset Boulevard, was designed to accommodate large lot sizes (up to 4 acres). Electric and telephone lines were buried beneath the wide, tree-lined streets to preserve the landscape. Handsome, English-style street lamps, designed exclusively for Holmby Hills, were erected throughout the neighborhood. Among the first mansions built here in the late 1920s was the Tudor-style home of the founder’s son, Arthur Letts, Jr. (purchased in 1971 by Hugh Hefner as his Playboy Mansion West). Thanks to its lush landscaping, enormous lot sizes, and privacy, from the beginning Holmby Hills has attracted the rich and famous. In the 1950s, Walt Disney built his dream home here, which featured a miniature steam railroad, complete with 300 feet of track and a 90-foot-long tunnel.