The redwoods in California are primarily found along the northern and central coastal regions, where the climate is foggy and damp-ideal for these towering trees. Key locations include:

• Redwood National and State Parks in Humboldt and Del Norte counties, which encompass Redwood National Park, Del Norte Coast Redwoods State Park, Jedediah Smith Redwoods State Park, and Prairie Creek Redwoods State Park. This area protects 45% of the remaining old-growth coastal redwoods and features some of the tallest trees on Earth

• Humboldt Redwoods State Park , home to the Avenue of the Giants, a scenic highway where you can drive through massive redwoods. This park contains the world's largest continuous old-growth redwood forest, Rockefeller Forest

• Montgomery Woods State Natural Reserve and Hendy Woods State Park in Mendocino County, which offer less crowded but impressive redwood groves

• Julia Pfeiffer Burns State Park in Big Sur on the Central Coast, where redwoods grow near the Pacific Ocean and offer scenic hiking trails

• Muir Woods National Monument in Marin County near San Francisco, famous for its accessible old-growth redwoods and proximity to the Bay Area

• Additional redwood groves are found in parks along the California coast, such as Big Basin State Park, Henry Cowell Redwoods State Park, and Redwood Regional Park in Oakland

In Southern California, smaller redwood groves exist in places like Descanso Gardens, Griffith Park, and Carbon Canyon Regional Park, but the vast ancient redwood forests are mainly in Northern and Central California

. Thus, the most iconic and extensive redwood forests are located in Northern California’s coastal counties of Humboldt, Del Norte, Mendocino, and Sonoma, extending down to Big Sur on the Central Coast