The Arizona-Sonora Desert Museum is a zoo, a natural history museum, and a botanical garden all in one. The majority of the museum is made up of outdoor exhibits. You can see all the native desert animals.
Just be careful what time of year you visit. It can be very hot in the summer, which makes it uncomfortable to trek outdoors. Also, the animals sleep during the hot part of the day.
The museum is open every day of the year. The hours of operation vary depending on the season.
June - August
7:30 am - 10:00 pm
March - September
7:30 am - 5:00 pm
October - February
8:30 am - 5:00 pm
Also, the road leading to the museum runs through the desert and mountains. It's a steep and narrow road with great views.
The cost to enter the museum is really reasonable.
Prices are also tied to the season.
May - October
$9 Adults
$2 Kids 6-12
November - April
$12 Adults
$4 Kids 6-12
Children 5 and under are always free.
A couple of suggestions, bring a hat, sunscreen and water. There is a gift shop and small cafe, but the water is overpriced. The desert trail has water fountains and ramadas to cool in. Also, the reptile house, the butterfly exhibit, the aviary and the small art museums are great places to stop and get out of the sun for a bit.
One last thing, keep an eye out for the docents. They're able to share loads of great info and sometimes they'll bring out animals to view up close and personal.