Redwood National and State Parks
Among the many natural wonders that California is famous for, the state's towering redwood trees are the most notable. Redwoods are the world's tallest tree species, and California is one of only two states in the United States where they can be found (the other is coastal Oregon). Redwood National Park is unique in that it encompasses several parks along California's northwestern coast.
Big Basin Redwoods State Park, California's oldest state park, and Humboldt Redwoods State Park, home to the world's largest remaining contiguous old-growth forest of coastal redwoods, are both must-sees. There are numerous camping options (starting at $35 per night), but cabins are only available in Prairie Creek Redwoods State Park and Jedediah Smith Redwoods State Park (for $80 to $100 per night, depending on the season).