Monreale's cathedral, built by William II, dates to 1172 and is now part of a larger UNESCO World Heritage Site that also encompasses the Royal Palace and the Palermo Cathedral, among other sites.

The mosaics in Monreale cathedral, in Sicily, span over 6,400 sq m and contain 2.2 kilos of solid gold. The bodies of tech tycoon Mike Lynch and his daughter Hannah were among those inside the ...