Waterford Viking Triangle - Credit: Wikimedia Commons
The Waterford Viking Triangle is part of the cultural and heritage area in Waterford City. It is so called because of the 1000-year-old Viking walls which once surrounded it. The sites within the "triangle" include Reginald's Tower (which contains the Viking Museum) as well as the Medieval Museum and the Bishop's Palace Museum, collectively known as Waterford Museum of Treasures. Read more on Wikipedia
Source: en.wikipedia.org