Add ice to 4 tall highball glasses. Then top each glass with 2 maraschino cherries, 1 lemon and 1 orange slice.
Fill a drink shaker with ice, and then add the limoncello, whiskey, orange juice and maraschino cherry juice. Shake vigorously for 10 seconds. Strain and pour into a pitcher. Add the sparkling water to the pitcher and gently stir. Pour into the prepared glasses and serve.