 Muslims from around the world visit the city, not only for the Hajj and Umrah pilgrimages, but also as tourists to visit regional landmarks such as the 'Aisha Mosque ("Masjid 'Aisha") and the sites visited by pilgrims in the Hajj and 'Umrah.Makkah is now home to two of the most expensive buildings in the world, the Masjid al-Haram, valued at 100 billion US dollars and the Abraj al-Bait complex, valued at 15 billion US dollars.Makkah has been referred to by many names.