Big Bear is great. Right up on a mountain, around 7000 feet I think, surrounded by woods and a lake. Will probably need a high altitude check out if you are not used to those. Catalina is another one, again usually requires a check out though. Other places to go include Las Vegas, McCarran Intl, Santa Barbara for lunch, Austin in Texas has the best FBO I've been to (stay for free).
St George in Utah is on a big plateau and is an interesting circuit, you can go see London Bridge on the way to Sedona, where the scenery is spectacular. Loads to see around the Grand Canyon too. And then there's Monument Valley where alot of the old westerns were filmed. I could go on. There are loads of good airfields. When you get out there get hold of the orange A5 size airfields guide and just ask your instructor, everyone knows the good places to go, depends on what you want.
I've got more info, flight times, etc. if you want it.