Just a 10-minute drive outside Wexford town, Johnstown Castle and Gardens is the location of the Irish Agriculture Museum. The castle itself is used as a Convention Centre and tours are not permitted, but its gardens alone are worth the trip. The 50 acres of well-kept grounds were designed by architect Daniel Robertson, who also designed the gardens at Powerscourt in Wicklow. The walkways through the mature woodland and along the castle lakes are a great way to while away an afternoon.