POWERSCOURT: For our last day we wanted to get out the city. We saved money, but not time, by taking a city bus south to Powerscourt Estate. It got stuck in slow-moving traffic for a long time and there was a long but not unpleasant walk on the other end of the trip. Powerscourt was originally a stately home, but shortly before it was to be opened to the public in 1974 it burned to the ground. Today the remnant houses a variety of upscale shops; but people come mainly for the sprawling, elaborate gardens.