When it comes to religious belief, Bahrain rules and customs are relaxed in comparison to other countries.Islam is the official religion of Bahrain and to learn more about Islam one should visit Al Fatih mosque, the largest building in the country. This modern structure is built with imported marble from Italy, the glass from Austria, and the teak wood from India. The Grand Mosque in Juffair offers free tours for non-Muslims, every day except Friday. The Ad-DirazTemple is a small Dilmun site. Its stone base which is the centrepiece is considered to be an altar.