First settlements nearby the Waterford City were established by Vikings in 853, eventually Vikings having been driven out by the local Irish. In our days Waterford is a modern city which has developed transport infrastructure and economic sectors. Waterford Port handling more than 10% of all Ireland's external trade, also, Waterford City is a homeland of world-famous manufacturer of crystal - Waterford Crystal. Festivals such as Tall Ships Festival, Festival of Light Opera and Spraoi International Street Arts Festival attracts numerous visitors to the Waterford, St. Patrick's Day parade is also a great event in City`s life. Waterford is one of the oldest cities in Ireland, 10th-century fortification constructions, Reginald's Tower and Cathedral of the Most Holy Trinity form unique architectural appearance of the Waterford City.