Hiking Up Camelback Mountain or Piestewa Peak. Hiking the trails up these two mountains is a favorite activity among the city's more active residents. Both trails are steep climbs, but the views from up top are superb. Bring water and start early in the morning if it's going to be a hot day.
Strolling through the Desert Botanical Garden after Dark. This cactus-filled garden is beautiful any time of day, but is particularly enjoyable after dark, when the crowds are gone and hidden lights illuminate the cacti.
Hanging Out Midday at the Oasis. Phoenix and Scottsdale have plenty of great pools, but the Oasis water park at the Pointe South Mountain Resort is the biggest and the best. Not only are there terrifyingly steep water slides, but there's also a wave pool.
Taking the Scottsdale Art Walk. Thursday evenings from October to May, both dilettantes and connoisseurs turn out to visit the nearly 60 galleries in downtown Scottsdale, many of which have artists on hand and provide complimentary refreshments.
Attending a Spring-Training Baseball Game. Get a head start on all your fellow baseball fans by going to a spring-training game while you're in Phoenix. Just be sure to book your hotel well in advance; these games are the biggest thing going in the Valley each spring.
Mountain Biking in South Mountain or Papago Park. The trails of these two desert parks are ideal for mountain biking, and whether you're a novice making your first foray onto the dirt or a budding downhill racer, you'll find miles of riding that are just your speed.
Spending the Day at a Spa. When it comes to stress relief, there's nothing like a massage or an herbal wrap. The chance to lie back and do nothing at all is something few of us take the time for anymore. And, for the price of a single 1-hour treatment, you can usually spend the whole day at a spa.
