Mecca both residents and pilgrims. Mecca's culture has been affected by the large number of pilgrims that arrive annually, and thus boasts a rich cultural heritage. As a result of the vast numbers of pilgrims coming to the city each year, Mecca has become by far the most diverse city in the Muslim world. In contrast to the rest of Saudi Arabia, and particularly Najd, Mecca has, according to "The New York Times", become "a striking oasis" of free thought and discussion and, also, of "unlikely liberalism" as "Meccans see themselves as a bulwark against the creeping extremism that has overtaken
Mecca squares. Traditional homes are built of local rock and are generally two to three stories. The total area of Mecca today is over . In pre-modern Mecca, the city used a few chief sources of water. The first were local wells, such as the Zamzam Well, that produced generally brackish water. The second source was the spring of Ayn Zubayda. The sources of this spring are the mountains of J̲abal Saʿd (Jabal Sa'd) and Jabal Kabkāb, which are a few kilometers east of Jabal Arafa or about southeast of Mecca. Water was transported from it using underground channels. A very