John McKinney is the author of "Day Hiker's Guide to California's State Parks" (Olympus Press, $14.95) Heard about the 17-Mile Drive? Of course you have. Travelers arrive from around the world to ...

The seven-mile route has several viewpoints (like Gunnison Point and Painted Wall) and short hikes you can tackle on a day trip. The parks are also incredible for stargazing.