Large numbers of Muslims converge once a year on Saudi Arabia to unite in a series of religious rituals and acts of worship as they perform the Hajj, the pilgrimage that is one of the pillars of Islam.

Adha, a period of "communal enjoyment" for Muslims worldwide, has officially arrived. Here's what we've learned about the Islamic holiday.

In 2025, millions of Muslims will gather in Mecca for Hajj, beginning June 4th. This pilgrimage, a central pillar of Islam, involves rituals symbolizi