If the stress of everyday life is weighing you down, take a trip to Torrey Pines State Reserve just north of San Diego. Torrey Pines State Reserve is home to one of the biggest “secrets” in San Diego. The secret is not readily apparent, but it is important. The reserve is home to the rarest pine tree in all of North America, and one of the rarest trees on the planet, the pinus torreyana – or, as Californians call it, the Torrey Pine. When you visit, you’re getting to see a very rare, endangered species.