United States
Mount Charleston, about an hour north of Vegas, is a slightly ramshackle ski resort in winter. In summer, the higher altitude - about 10,000 ft - means temperatures are more bearable during the day. There are pinewoods, a ski lodge and a hotel with a large dining room.
Take the I-95 out of Vegas then head west on HWY 157
If you're thinking of going to Vegas with children, I'd check out Excalibur casino, which is child-friendly and right on the Strip (where all the major casinos are located).
It's as close to a "family" casino as you can get (with the possible exception of Circus Circus which is also on the Strip, but much farther down where the older - and grottier - casinos are located). You can walk up and down the Strip from that location, it's minutes from the airport, and you're right in the heart of the action. Right now they're virtually giving the rooms away.
Search Been there