Ross Monument - the monument to the man who burned down the White House
Day trip 2:
This trip will be to Dublin, the capital and largest city of the Republic of Ireland. While there may be some groups organized at the conference to visit certain tourist attractions (to avail of group rates), this trip will be a free day to wander in the city to visit the things that interest you most. Here's a short list of interesting places to visit to whet your appetite (by no means an exhaustive list!):
Kilmainham Gaol Museum - Many Irish revolutionaries were imprisoned and executed here and the tour is very interesting. NOTE: The tours for the Gaol book up quite quickly especially in the summer. If you want to visit the gaol it is important you book tickets for yourself in advance on their website!
Besides the official day trips listed above, there is plenty to do and see both on the grounds and nearby Castlewellan Castle. In the past conference attendees arranged short afternoon visits to both Tollymore Forest Park and Newcastle among themselves (utilizing conference attendees' cars and/or public transport). This is not something organized officially by the booking secretaries, but rather something you can think about and organize among yourselves.