Located on the hill northwest of the center of Los Angeles, it is far from Hollywood. It is a landmark in Los Angeles and was once the location of the films "Jiaojiaowa 2" and "Golden Eye". The observatory was built in 1933, opened to the public in 1935, and renovated in 2002, lifting the observatory with reinforced cement as a whole, adding a layer below the original layer, costing $95 million, which took four years, and reopened to the public in 2006. It is one of the world's leading observatories, and is open to the public for free, including various exhibition rooms and a movie screening room.