A Holland America Line cruise to Ireland reveals must-see gems around the Emerald Isle. You can take a foodie walking tour in Dublin, and pass through the Guinness factory gates for a pint of the “black stuff.” Enjoy views of Dublin Bay on the drive to 14th-century Malahide Castle, or learn to work a sheepdog on a typical family farm. The cruise port of Cobh leads to medieval Cork, the historic sailing town of Kinsale, the Jameson whiskey distillery, and Blarney Castle to kiss its famous stone.