Oviedo’s Cathedral combines Gothic, Baroque and Renaissance elements. Its 15th-century spire looms over a medieval basilica built by the first prince of Asturias. The cathedral as a whole was finally completed in the 16th century, after more than 250 years of construction work. The main altarpiece, depicting the life of Christ, is in Flemish Gothic style. The cloister is home to the Diocesan Museum, with a number of important archaeological relics.

Dating back to the 13th century, the Iglesia de Santiago is the oldest church in Ciudad Real. It was constructed in the Gothic style, but the design shows signs of Romanic and Islamic influences.

Not to be mistaken with the larger lake of the same name on the River Shannon, Lough Derg in Co. Donegal is a renowned place of pilgrimage. A traditional three-day pilgrimage takes place each August, but the Lough is open to visitors (including anglers!) year-round. The Lough is composed of over 30 islands and inlets, the most famous of which is Station Island - it is said that when St. Patrick traversed Ireland converting kings to Christianity, Jesus appeared to him here and revealed the entrance to Purgatory! The Lough's name comes from the Irish word "dearg" (red) as a local legend holds that a local mortal once called the magic powers of the lake to transform a worm into a vicious cow. Once defeated, the red blood of the cow changed the colour of the rocks (which are in fact sandstone) to red.