This south of Miami Beach island town is popular for visitors who like all kinds of water sports but it also attracts golf and tennis fans. The Tennis Center at Crandon Park is a major attraction. With its 13,800-seat stadium, the park has been hosting the Miami Open since 1987. The best players in the world have played there many times. Spending an afternoon going to the Cape Florida Lighthouse (only 109 steps) is also recommended. It is surrounded by native plants, birds and other animals – great hiking location. Boat tours are popular as well. For those of you who want to keep their fitness level high, Key Biscayne is very bike-friendly. Lanes are set up along main roads and a 1.5-mile bike trail goes through the beautiful Bill Baggs Cape Florida State Park.