Trinity College Library (the 'Long Room'), Dublin. There has been a library at the College ever since it was founded (in but the Long Room was not begun until Completed in it is the largest library in Ireland, containing books.
Sharpie + Dollar Store mugs + Bake at 350 for 30 mins = easiest personalization ever. You can even use super cheap mugs from the dollar store to create gifts or party favors. Just draw on the surface of your mug and bake it for 30 minutes at 350 degrees.