Arizona might be famous for its canyons, buttes and valleys, but there's more to the Copper State. Head to Mesa, just outside of Phoenix, and join a stand-up paddleboarding tour along the Salt River. Thanks to the calm waters, this is suitable for beginners as host Curtis, a certified instructor, will help you find your balance. Once you're paddling steady on the board, admire the beauty of the surrounding landscape and spot wild horses, bald eagles and elusive river otters. Prices start from around £59 ($77) per person.