File:KaabaGrandMosqueMecca.jpg

Thousands of Muslims performing one of the rituals associated with the Hajj, a pilgrimage to Mecca, Saudi Arabia, December 21, 2007.

The structure in the middle of the photo is called the the Kaaba, and it is located inside the Grand Mosque in Mecca, Saudi Arabia. Pilgrims will walk counter-clockwise around the Kaaba seven times and kiss the cornerstone (called the Black Stone) at it's easternmost corner.

REUTERS/Ali Jarekji, Copyright © 2007 Reuters Limited. All rights reserved. Copyright © 2007 Yahoo All rights reserved.