In the world there are about 1 billion 126 million adherents of Islam, which is approximately 19% of the population of the Earth.
In Russia there are more than 20 million Muslims. In modern Russia there are about 3.5 thousand mosques, there are about 30 of the spiritual directorates, including the Central spiritual administration of the Muslims (Moslems) of Russia. Function Islamic schools and madrasas operate Islamic parties.
in Indonesia live 177 million adherents of Islam in Bangladesh 101 million, in India - 99 million, in Iran - 18 million, in Turkey - 55 million, in China - 27 million, in Iraq, 18 million, in Afghanistan - 16 million, in Saudi Arabia - 13 million.
In African countries:
in Egypt there are more than 46 million Muslims in Algeria - 25 million, in Morocco - 25 million, in the Sudan - 18 million, in Ethiopia - 16 million.
In the United States is home to about 6 million Muslims.
4.4. Religious sites of Islam
As already noted, the pilgrimage to Islam is considered the visit of the two Holy cities of Mecca and Medina, located in Saudi Arabia.
These pilgrimages are divided into two categories:
1) Hajj (great pilgrimage);
2) Umrah (lesser pilgrimage).
Mecca and Medina is annually visited by about 2 million pilgrims. Here is built one of the largest mosques in the world - Haram Beit-Уллах. Inside the mosque is the sanctuary of the Kaaba.