Down this road you'll find the Cliff House and the ruins of the Sutro Baths. These ruins aren't too impressive, but it does make for a nice and adventurous date (and something worth seeing in the city). There is a nice like trail you can hike, a cave you can explore, and if all this is too boring, the beach is only a walking distance away. You can stand right on the edge of the ruins and stare out into the ocean. It is clean and safe, and it has its own parking lot. Also, its located in a really nice neighborhood of the city. So if you are up for walking, you can explore some nice houses and parks as well.