Religious tours are primarily undertaken to visit holy sites and shrines that are significant to a particular religion or belief system.

Islam is most commonly associated with pilgrimage tours, particularly the Hajj to Mecca, which is a mandatory religious duty for Muslims.

Varanasi is considered the holiest city in Hinduism and is a popular destination for religious tours.

Lhasa, the capital of Tibet, is known as the 'Roof of the World' and is a significant pilgrimage site for Tibetan Buddhists.

Hajj is the annual pilgrimage to Mecca, which is a mandatory religious duty for Muslims.

The Church of the Holy Sepulchre in Jerusalem is believed to be the site of Jesus' crucifixion and resurrection and is a major pilgrimage site for Christians.

Kumbh Mela is a Hindu festival that involves a mass pilgrimage to the Ganges River and is one of the largest religious gatherings in the world.

Mahabodhi Temple in Bodh Gaya, India, is where Buddha is believed to have attained enlightenment and is a major pilgrimage site for Buddhists.

Jubilee Year is an annual pilgrimage to the Vatican City, which is held every 25 years and attracts millions of Catholic pilgrims.

The Western Wall in Jerusalem is a remnant of the Second Temple and is a significant pilgrimage site for Jews.

Har Ki Pauri in Haridwar, India, is a sacred bathing ghat on the Ganges River and is a popular pilgrimage site for Hindus.

Lumbini in Nepal is the birthplace of Buddha and is a major pilgrimage site for Buddhists.

Ise Matsuri is the annual pilgrimage to the Shinto Grand Shrine of Ise in Japan, which is dedicated to the sun goddess Amaterasu.

The Church of the Nativity in Bethlehem is believed to be the birthplace of Jesus and is a major pilgrimage site for Christians.

Ram Janmabhoomi in Ayodhya, India, is believed to be the birthplace of Lord Rama and is a significant pilgrimage site for Hindus.