That is a really hard question to answer. In fact I'm not even sure I know the answer.... But I'll try.

I liked Niagra Falls, I guess just because I like water falls. In fact I probably like most waterfalls. I liked Arizona, it's really pretty out there, and the Grand Canyon is pretty cool.
I like Mammoth, California and the areas around there because it's pretty up there.
Yosemite, California is a very pretty area.
I like Bishop, California because I watched a scary movie there one night, then had to drive miles in the dark to get back to where we were staying in Mammoth.
Also I love going down to Ensenada Mexico, because it's so pretty in Baja California, and the people were so nice in Ensenada, and it was fun to go down there twice on missions trips to build a house and do vbs programs.
I haven't been to many big cities in my life, so those are many times interesting to me, if they have interesting stuff in them.
I also like going to Idaho to visit relatives and got to see MAF.
I think La Jolla, California is very pretty. The also have a shop called "The Cheese Shop". If you are ever in La Jolla go to the Cheese Shop.

I like most places I've been to the ocean at.
I think some of my most favorite places I've visited are places I go to very often in California to visit family members.
I like Old Town Temecula (in Temecula, california), I guess becuase of the little museum there, and it's an interesting little town... to me anyway.

Especially since I had to do a report on someone from that area, and it was one of the hardest reports ever, since it was a little known person, and there was almost no information to be found on him. But it was definiately my most interesting research paper I've ever done.
I really like the town of Bodie, california.
http://en.wikipedia.org/wiki/Bodie,_California