Cancun draws beach-lovers from all over the world with its turquoise waters and endless stretches of sand. Bring the whole family to GR Solaris Cancun & Spa. The children's pool and kids' club occupy the little ones, while older kids will love the climbing wall, kayaking, and cooking or dance classes. Or, leave the kids at home and book a room at the adults-only Riu Palace Las Americas. Activities like snorkeling, scuba diving lessons, sailing, and kayaking are all included.