Sunrise Hwy, which heads north of of I-8 in the east county is nice. Cruise through the mountains, see some of the desert, end up in Julian, then take Hwy 78 west into my old hood, Ramona. From there you can either stay on 78 which takes you to the WAP then Escondido or take the 67 in Ramona back to the SD area. Palomar Mt with the observatory is neat. Borrego Springs for some desert action. Stay far away from Tiajuana unless you are with a VERY large group. If you've ever been to WAP in the past, they did away with the tram several years ago that allowed you to see an immense portion of the place. Now you have small buses that take you to a smaller area and if you want to see more you must upgrade to the inner tours. For sure Cruzin Grand in Escondido on Friday, 5pm on, is nice. Lots of eateries on Grand. There are some wineries in the county but not as many as in the Temecula area.