From the New York TImes: Home to the Vatican, the pope and St. Peter’s Basilica, Rome is unchallenged in its claim to be the global center of the Roman Catholic Church. But the city also plays host to the largest mosque in Western Europe, the largest Jehovah’s Witness Kingdom Hall on the Continent, and, as of this year, the biggest center in Europe belonging to the Church of Jesus Christ of Latter-day Saints.