Encompassing the summit of Mt. St. Helena, this mostly undeveloped park is where Stevenson and his bride, Fanny Osbourne, spent their honeymoon in an abandoned bunkhouse of the Silverado Mine. This stay in 1880 inspired the writer's travel memoir The Silverado Squatters, and Spyglass Hill in Treasure Island is thought to be a portrait of Mt. St. Helena. A marble memorial marks the site of the bunkhouse. The 10-mile trail is steep and lacks shade in spots,
but the summit is often cool and breezy. Bring plenty of water, and dress in layers.