The National Gallery has one of Europe’s best collections displayed in a building which has been successively extended since its opening in 1864. The Irish art (17C-20C) is of course exceptional (see the room devoted to Jack Yeats, brother of the poet), but so is the Italian collection with early reredoses, works by Fra Angelico, Mantegna, Titian, and a fine Caravaggio, The Taking of Christ. French, Flemish, and Spanish art is also well represented.