James Joyce's former home (©Emma Levine)
This cliff-top Martello tower south of Dublin houses literary memorabilia associated with the great writer, and features in his epic novel "Ulysses". You can access the roof via a narrow winding staircase for views of Dublin Bay. Apr-Aug Tue-Sat 10am-5pm (closed 1pm-2pm), Sun 2pm-6pm. Admission free.