This active theater, which frequently puts on elaborate productions of the plays that catapulted writers such as O'Casey and Behan to prominence, had its creative heyday under the direction of W.B. Yeats after it was founded in 1904 by Yeats and Lady Gregory. The controversial works presented here incited riots in some theatergoers. The historic building has a remarkably plain exterior, but the ornate foyer and stairwell includes portraits of former actors and playwrights, as well as historic information.

Originally the Parliament House, the Bank of Ireland adopted its present identity in 1808. The original House of Lords is still exquisitely decorated with tapestries, woodwork, and elaborate ceilings. The chandelier that adorns the House of Lords contains 1,233 pieces of Waterford crystal from 1785. This magnificent building offers tours Monday through Friday, so you can get a glimpse of Ireland's political history. BUS: 15A, B, C; 46, 55, 68, 86, 83

This looming, elaborate Norman church was founded in the 12th century by a Viking known as Strongbow. Only parts of the original cathedral, including the large crypt, remain from that time. Inside, view an ornate baptistery, a 15th century brass medieval lectern, and Romanesque arches and windows. Medieval stone carvings decorate the interior, including one of Strongbow himself in full armor.

This remarkable building sports a classical architectural style and was completed in 1791. With columns, pavilions, and a central dome, it has an elegant beauty that never fades. It is worth coming here just to view the exterior. While there, you may also want to stop by the visitor's center in the dome and clock tower. BUS: 27A, 27B, 53A

You walk through the brick gate built in the 13th century, and the first sight you see is the hulking circular tower. Once prisoners' quarters, the tower now includes huge chandeliers, brass work and elaborate carpeting. State apartments are contained at the site of the medieval fortress, and state functions are frequently held here. The opulent interior is in striking opposition to the medieval-style exterior. Guided tours are available.#13;#10;