Depart Dublin on a double-decker bus with wraparound windows, giving the best possible views of the scenery on the way to Malahide Castle.
Head for the North Coastal area of Clontarf, passing Bull Island on the way to Malahide Castle. With included entry, you walk right in and embark on a guided tour. Listening to a commentary during the tour allows you to learn much more about the 800 years of history than you would exploring on your own.
After the tour, head for the quaint fishing village of Howth, where you have time to look around independently. This combination of guided and free time portions of the tour appeals to a variety of travelers.
Aboard the bus, travel back to Dublin, where you can choose to participate in a hop-on hop-off tour..