The wedge of ancient streets northwest of The Mall – the Viking Triangle (www.waterfordvikingtriangle.com) – is home to three excellent museums: the Medieval Museum, the Bishop's Palace and Reginald's Tower, collectively called Waterford Treasures. Together they cover 1000 years of local history. If you only have time to visit one attraction here, make it the Medieval Museum.
A wide 18th-century street, The Mall is built on reclaimed land that was once a tidal inlet. Its stateliest buildings are John Roberts' 1788 City Hall and the beautifully refurbished Theatre Royal, arguably Ireland's most intact 18th-century theatre. In the middle of the waterfront stands the 1860s clock tower, a famous local landmark.