_Private Edifices_--are not very numerous. See Charlemont House; Leinster House, fine Corinthian front, rusticated, and Doric wings; Waterford House in Marlborough-street. _Public Edifices._--The barracks consist of 4 noble squares. The Castle, mean on the outside but splendid within, contains Public offices, an Arsenal and Armory; elegant modern Gothic Chapel, and Bermingham's Tower. Commercial buildings on N. side of Dame-street. To see the Custom House with striking effect, it must be viewed from the opposite side of the river, where the statues and decorations present a fine spectacle. The internal arrangements deserve notice. The long room is 70 feet square and of course a practical bull. The Exchange merits peculiar architectural attention, being a fine rotunda within a square, having in the interior 12 fluted pillars of the Composite order, 32 feet high, with a highly enriched entablature crowned by a handsome dome. The Law Courts form a magnificent pile; the approach grand, the hall noble, and the arrangements well suited to the purpose. Sir R. C. Hoare objects to the architectural effect produced by the dome, especially when viewed from the opposite side of the river. See the Linen Hall. The Parliament House, no longer used for its original purpose, presents a façade of fine architecture perfectly in unison with the handsome front of Trinity College. Post Office in Sackville-street. Stamp Office occupies an elegant mansion in William-street; once Powerscourt House. Trinity College forms a very striking object when approached from Dame-street. The tourist will notice the fine effect on entering the principal court, particularly of two elegant stone buildings with correspondent Corinthian porticoes on the right and left. See the Library, a magnificent room, surpassed only in Sir R. C. Hoare's opinion, by that of Trinity College at Cambridge: it is 269 feet long, 50 broad, and 40 high. The æra of the University is the reign of Elizabeth, but the edifice itself is modern. A handsome but not very extensive park belongs to the University, in which, see the celebrated Anatomical School, with wax preparations; also the Museum and the Provost's House. _Public Places_ are not very numerous. The Rotunda in Rutland-square, attached to the Lying-in Hospital, is open as a promenade with balls, concerts, &c. The Theatre Royal (Crow-street) is gloomy on the outside, but highly embellished and convenient within.