Whether you want to be relaxing inside or playing outside, Reno has plenty to do for every age. Starting with the entire family, visit some of the area's museums including the wonderful Nevada Museum of Art in its award-winning building and the Nevada Discovery Museum where children of all ages (and adults) can interact with various exhibits depicting Nevada. Another excellent museum is the National Automobile Museum that includes some of the most beautiful cars you will ever see.
If you want to spend some time outdoors, visit some of Reno's parks including the popular local parks of Rancho San Rafael, near the University and Idlewild Park near the Truckee River. If you are near the river you have to visit the Truckee River Whitewater Park which is located right downtown. Just down the street from the river is the Reno Aces baseball stadium, which is a great way to spend a spring or summer evening.
If you want to get out of town, visit the Wild West town of Virginia City in the foothills above Reno and ride the Virginia & Truckee Railroad, an authentic steam train. If you've made your plans and have gotten tickets, about three hours north of Reno is one of the area's most famous events: Burning Man.