The Marin Headlands are great for hiking or just a scenic drive. There are plenty of nice windy roads, in addition to a scenic loop you can cruise. You’ll also find a variety of trails, including some day hikes and quick strolls. The two highlights here? The old WWII-era gun batteries you can climb around and the lesser-known views of the Golden Gate Bridge, away from the tourists. Bonus: If you know where to look, there’s also a Nike Missile Site you can see from afar if you’re into Cold War history.