I've read some older novels about Monterrey, California, and would like to visit there. That area has an endemic pine and some other neat things, some of which are also probably sensitive to climate change.
I've been to Las Vegas for work (and will again in a couple weeks if there isn't a shutdown) and there are some neat things out of town, like a nearly 12k foot tall mountain. I've never done anything on town except for training, tho.