Pilgrimage sites are places of religious significance across different faiths. Lourdes, France is an important Christian pilgrimage site where the Virgin Mary appeared to Bernadette Soubirous. Mecca, Saudi Arabia is the holiest city in Islam where Muslims hope to make a hajj pilgrimage at least once in their lifetime. Hindus consider the River Ganges in Varanasi, India to be the most sacred where they pray and bathe, believing it will strengthen their faith despite the river's pollution.