Mt. Lassen, California - It was a brisk 3 degrees while we were out with the snowshoes, tubes, sleds and Maverick's little skis - we picked up this training pair at REI.
Lassen Volcanic National Park is a pretty great place to adventure, hike and explore. I will not say that it is for the meek - during the winter, most roads are closed and you can expect very cold temps. During the summer, there are many lakes to discover and camping to be had.
Next on our list is the Anselmo Winery - we have heard it is the place for a fancy night out.