Its walls enclose a still-intact 12th-century round tower, 13th-century Gothic cathedral and exquisite 12th-century Romanesque chapel.

BBC: Who was the real St Patrick?

Devenish Island contains one of the finest examples, with a spectacular round tower.

BBC: Fermanagh: Northern Ireland's lakeland county

Riding in the colours of Round Tower Racing, Vitrans Honda, Klaffi Honda, MV Agusta and JMF Millsport Yamaha, he enjoyed considerable success, including three Irish championships and podium places at the North West 200, Isle of Man TT and the Ulster Grand Prix.

BBC: Finnegan tragedy

The weathered, silvery stone ruins scattered across the grassy, 158m-high Hill of Slane today include a foundational outline of a church, a round tower and a monastery associated with St Erc, and a later Norman motte and bailey on the hill's western side, built by Archembald Fleming, who came to Ireland with Henry II in 1171.

BBC: Who was the real St Patrick?