Waterford is a city located in the south-eastern part of Munster. It has a population of 53,504. The city is known for Waterford Crystal, a manufacturer of glass and crystal based in the city. It is possible to visit the factory, to see in person how Waterford Crystal is blown. The city also houses the oldest civic building in Ireland, Reginald’s Tower. It is the only urban monument in Ireland to keep its Viking name. This building is located in the Waterford Viking Triangle, named after the 1000-year-old Viking walls which once surrounded it. It is currently also the site of the Waterford Museum of Treasures.