Comprising 153,075 acres, the Santa Monica Mountains National Recreation Area, a unit of the National Park System, is the World’s largest urban national park. Golden Gate National Recreation Area is, at 73,000 acres, half the size of the Santa Monica Mountains NRA.

The Santa Monica Mountains NRA has more area codes (5) and zipcodes (26), including the notable 90210 zip code for Beverly Hills, than any unit in the National Park System.

Los Angeles is unique among cities in a thousand ways, here’s just one: it is the only city in the world divided in two by a mountain range, the Santa Monica Mountains, and thus it also the only city divided by a national park.

Of all the world’s biomes (ecosystem types such as deserts or rainforests), the Mediterranean or broadleaf evergreen forest is the rarest. Found in five locations on the globe, fewer acres of this rare biome exist than any other, as a percentage of original acres, only 18 percent remain undisturbed.