Some of the most famous sights in California

• Los Angeles: World-famous Hollywood sign, the Walk of Fame, the Graumann's Chinese Theater, Beverly Hills, Rodeo Drive and sandy beaches.
• San Francisco: Iconic Golden Gate Bridge, Alcatraz (USA's toughest maximum security prison and now a national park), Chinatown, Italian North Beach, ride a cable car up and down the steep hills of San Francisco, and a lot of hills.
• San Diego: A world famous zoo, wild animal park, the Sea World marine theme park, and a vibrant, renovated downtown core complete with major league baseball stadium
• Anaheim, modern theme parks and Disneyland
• Santa Barbara, city on a south-facing coast, with some justification, as "the American Riviera."

• Visit the Roy Rogers-Dale Evans Museum, and The Route 66 Museum.
• Enjoy the San Diego Maritime Museum.
• View the famous 1920s sardine factory, Cannery Row and Old Fisherman's Wharf.
• Yosemite National Park ( world's best-known glacier-carved valley,  Hiking - camping)
• Marshall Gold Discovery State Historic Park
• Joshua Tree National Park ( Hiking - rock climbing )
• Mojave Desert - Death Valley ( the hottest and lowest place in the continental US at 86m (282 ft) below the sea level)
• Visit Hearst Castle

National Parks

• Channel Islands National Park - five remarkable islands (Anacapa, Santa Cruz, Santa Rosa, San Miguel, and Santa Barbara).
• Death Valley National Park - A place of legend and a place of trial.
• Joshua Tree National Park
• Lassen Volcanic National Park - witness a brief moment in the ancient battle between the earth shaping forces of creation and destruction
• Redwood National Park - Stand at the base of a coast redwood and even the huckleberry bushes tower over you
• Sequoia and Kings Canyon National Parks - These twin parks hold monuments to nature's size, beauty, and diversity
• Yosemite National Park - one of the first wilderness parks in the United States

California State Parks

Actually California has many state parks. We listed some of them below;

• Big Basin Redwoods State Park
• Pfeiffer Big Sur State Park 
• Richardson Grove State Park
• Calaveras Big Trees

Other Destinations in CA

• Disneyland
• Lake Tahoe — A large, gorgeous lake great for water sports and excellent skiing in the winter.
• Napa Valley — Spas, wine tasting, wine tours.
• Big Sur — one of the most scenic spots along the Pacific Coast Highway
• California National Historic Trail - road to California carried over 250,000 gold-seekers & farmers to the gold fields & rich farmlands of California during the 1840's and 1850's
• Juan Bautista de Anza National Historic Trail - first overland route established to connect New Spain with San Francisco
• Old Spanish National Historic Trail - journey across the Southwest between Santa Fe and Los Angeles for history, culture, and scenic beauty
• Pony Express National Historic Trail - used by young men on fast horses to carry the nation's mail from Missouri to California in the unprecedented time of only ten days