It's just too hot to enjoy camping in some parks during the summer, but fall and winter are prime times for outdoor activity in those areas. Here's a sampling of NPS sites where the "off season" in the rest of the country can be the best season for camping.

The temperature has changed at Death Valley National Park. At least how you recognize it at the Furnace Creek Visitor Center.

You no longer need to travel to Death Valley National Park to find out how hot it is at Badwater. Now you can check the latest weather conditions for the lowest point in North America from the comfort of your home.

Waterfalls soothe us with their sounds, inspire our imaginations by their very presence, and, even refresh us, on occasion, with their cool spray. From the Pacific Northwest to the Eastern Seaboard, these cascades if water – named and unnamed – populate the National Park System. See how much you know about national park waterfalls, and maybe learn a little something, too.