Vatican City: With the smallest population, it's the spiritual center of Catholicism, home to the Pope.
Saudi Arabia: The birthplace of Islam, hosting the holy cities of Mecca and Medina.
Iran: Predominantly Shia Muslim, it's a hub for Islamic culture, with numerous religious sites.
Indonesia: The world's most populous Muslim country, known for its religious diversity.
India: A religious melting pot, home to multiple faiths including Hinduism, Buddhism, and Sikhism.
Israel: Significant for Judaism, Islam, and Christianity, housing Jerusalem's sacred sites.
Pakistan: Predominantly Muslim, it's a center of Islamic heritage and culture.
Nepal: Birthplace of Siddhartha Gautama, Buddha, it's a significant Buddhist and Hindu hub.
Bangladesh: Predominantly Muslim with a rich blend of Hindu culture and history.
Sri Lanka: Known for its Buddhist heritage, housing the Temple of the Tooth Relic in Kandy.