Tanzania like a few other countries, has a government program where they send 150 people to Hajj every year for free, only for those who can't afford it. The pilgrimage is performed in Mecca and Masjid Alharam which is the first mosque to be built in Mecca is the main mosque used for prayers for the duration of their stay. It was originally built by Prophet Ibrahim and his son Ismail,. The prophet Mohammed(SAW) revived its original purity, by breaking all the Idols that were housed during the pre-islamic time, and commanded the mosque to be a place of worship to Allah alone and not idols.
Masjid Alharam as seen from Google maps.
I pray for a safe journey to all our Muslim brothers and sisters who are going to Hajj this year.
May Allah guide you all and accept your prayers