Titanic and the Lusitania, Cobh
in 1912, the Titanic left Cobh as it's last port of call before heading across the Atlantic on it's first and only tragic voyage. There is a heritage walking tour in Cobh called the Titanic Trail that might be of interest to visitors. I didn't take it as i didn't have the time.
The Lusitania was a ship that was torpedoed and sunk 30 miles or so off the coast of Ireland near Cork in 1915. Many of the dead are buried in the Old Cemetery here.