Hajj is known as the pilrimage back to Mecca for Muslims and demonstrates their devotion to God and submission to God. The hajj makes Muslims feel significance on Earth and also their afterlife. During the hajj the pilgrims perform acts of worship and renew their own purpose here on Earth. it occurs in the month of Dhul Hijjah which is the twelfth month of the Islamic calendar. It is encouraged that all Muslims peform this journey to Mecca.
House of Khadija (r.a.) - This is the approximate region, outside the Marwah exit, where the house of Ummul Mu’mineen Khadija (r.a.) was located. It was here that the Prophet (s.a.w.) lived from the time of his marriage to her until he emigrated to Madinah. More information: http://www.islamiclandmarks.com/saudi/makkah/haram_sharief/house_of_khadija_ra.html