In addition to being Sistani's headquarters, it's also home to two important Shiite shrines, and much of the city's business revolves around religious tourism and Shiite education.

NPR: The Mood in Najaf, Shiite Stronghold

Other services include agents for religious tourism and pilgrimages.

CNN: May 25, 2012 -- Updated 0815 GMT (1615 HKT)

In the last few months, tourism courses have been set up by various institutions and religious organisations.

ECONOMIST: Archaeology in Palestine

U.S. citizens are not allowed to travel to Cuba for mere tourism, though they can obtain licenses for academic, religious, journalistic or cultural exchange trips.

NPR: Treasury: Beyonce, Jay-Z Cuba Trip Licensed

In 2000, when Tamir was serving as tourism minister, Shiran worked as a Jewish studies teacher at the Moriah national religious school in Haifa.

CENTERFORSECURITYPOLICY: Israel's reeducation minister

Lakes and reservoirs provide a range of resource values, including drinking water, irrigation water, navigation, fisheries, tourism, recreation, flood and drought management, climate mediation, as well as having religious and historic values.

UNESCO: Summary