Roman Catholicism is, by far, the most popular religion in the country. According to several sources (CIA World Fact Book 2005, Spanish official polls and others), from 80% to 94% self-identify as Catholics, whereas around 6% to 13% identify with either other religions or none at all.
Spain is also the location of one of the Roman Catholic church's most important holy cities; Santo Toribio de Liébana, which holds the largest single piece of the true cross. It is important to note, however, that many Spaniards identify themselves as Catholics just because they were baptised, even though they are not very religious at all (in fact some polls show that 14% do not believe in any God). According to recent surveys (New York Times, April 19, 2005) only around 18 per cent of Spaniards regularly attend mass. Of those under 30, only about 14 per cent attend.
Use your Spain cell phone rental to find a place of worship near you.