The pilgrimage to Mecca attracts millions of Muslims from all over the world. There are two pilgrimages: the Hajj, and the Umrah.
The Hajj, the 'greater' pilgrimage is performed annually in Mecca and nearby sites. During the Hajj, several million people of varying nationalities worship in unison. Every adult, healthy Muslim who has the financial and physical capacity to travel to Mecca and can make arrangements for the care of his/her dependents during the trip, must perform the Hajj at least once in a lifetime.
Umrah, the lesser pilgrimage, is not obligatory, but is recommended in the Qur'an.[53] Often, they perform the Umrah, the lesser pilgrimage, while visiting the Masjid al-Haram.