The Hollywood sign debuted in 1923 as a flashy advertisement, a blinking 50-foot-tall promo for an upscale housing development above the rapidly booming movie capital of Hollywood. It was meant to last for only 18 months. Yet the sign is now celebrating its 100th anniversary, having endured decades of dramatic ups and downs (including being obliterated in several movies) to become an international star in its own right. It’s a powerful symbol not just for Hollywood and the entertainment industry, but also for myriad hopes and dreams around the globe.