Ice Balloon Lanterns: Fill balloons with water then freeze. When they're about frozen, snip the top of the balloon and peel away. Drain any excess water. It's important that one side of the balloon remains unfrozen/open, so you can place a candle inside.
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.