National Library of Ireland in Dublin

You're standing on Kildare Street in Dublin, outside the National Library of Ireland. The building next to you is Leinster House. Now look across the front of Leinster House to the building on the other side. That's the National Museum of Ireland's archaeology building, this library's sister. The two mirror each other, and both went up in 1890. The library was designed by Thomas Newenham Deane.