The world’s most famous real estate billboard — the Hollywood sign — turns 100 this year, making summer an ideal time to visit. Yes, the City of Angels’ iconic landmark began as an ad for a new housing development called Hollywoodland in 1923 (the billboard lost the “land” part in 1949). Peep the awe-inspiring ad on foot, horseback, or even by helicopter. Head to Griffith Park for various hiking trails, or book a horseback ride with Sunset Ranch Hollywood. To see the sign like a true La La Land VIP, reserve the 35-minute Hooray for a Hollywood helicopter tour with Group 3 Aviation. Or, simply stay at The Kimpton Everly Hotel, Tommie Hollywood, or the Thompson Hollywood — three hotels that have views of the billboard from their rooftops.