This is the "City of Tents." Pilgrims spent the day worshipping and resting in Mina, in southeast Mecca, Saudi Arabia on July 18, 2021.(Photo: Xinhua)

 

The wide view of the Grand Mosque in Mecca, Saudi Arabia on July 17, 2021.(Photo: Xinhua)

 

This is the "City of Tents" at the Mina site in southeast Mecca of Saudi Arabia, taken on July 18, 2021.(Photo: Xinhua)

 

This is the "City of Tents" at the Mina site in southeast Mecca of Saudi Arabia, taken on July 18, 2021.(Photo: Xinhua)

 
The Hajj season commenced on July 18 as pilgrims arrived at the Mina site in southeast Mecca of Saudi Arabia.

Mina is famous for its role in the Hajj pilgrimage. To accommodate the pilgrims who stay in Mina over multiple nights in the month of Hajj, more than 100,000 air-conditioned tents have been built in the area, giving Mina the nickname "City of Tents."

With a capacity of up to 3 million people, Mina has been called the largest tent city in the world.

Precautionary measures against COVID-19 have been also taken into consideration.