STAFF PICK: This has to be one of the city's best-kept secrets: For two months every summer you can learn to fly, and land in cool turquoise water. Tucson Parks and Rec offers instruction in springboard diving to anyone over the age of 12, and while it's mostly kids, there are always a couple of old dogs learning new tricks. Most classes are offered during the lunch hour (though we'd love to see classes scheduled in the evening when more working people can attend and when the solar radiation is not so harmful). The coaches are all excellent divers and teachers who can coax grace out of the most intransigent bellyflopper. And the price is right: $10 for two months of four lessons a week.