Without wanting to belittle Ibiza, Ibiza Cathedral isn't particularly impressive, being rather austere, and not very big. This is part because it had a defensive function. It was started in the thirteenth century, and reformed until the eighteenth. The interior is quite modern, because there was a fire in 1936, and the cathedral suffered a lot of damage with, among other things, the altarpiece dedicated to Our Lady getting burned. The present one is a copy of the original, but it's interesting.