Mecca from the last 1,500 years have survived Saudi rule. Expansion of the city is ongoing and includes the construction of tall Abraj Al Bait Towers across the street from the Masjid al-Haram. The towers were the third tallest building in the world when completed in 2012. The construction of the towers involved the demolition of the Ajyad Fortress, which in turn sparked a dispute between Turkey and Saudi Arabia. The Zamzam Well is home to a celebrated water spring. The Qishla of Mecca was an Ottoman castle facing the Grand Mosque and defending the city from attack. However, the Saudi
Mecca the "Hollow of Mecca". The area contains the valley of Al Taneem, the Valley of Bakkah and the valley of Abqar. This mountainous location has defined the contemporary expansion of the city. The city centers on the Masjid al-Haram area, which is lower than most of the city. The area around the mosque is the old city. The main avenues are "Al-Mudda'ah" and "Sūq al-Layl" to the north of the mosque, and "As-Sūg Assaghīr" to the south. As the Saudis expanded the Grand Mosque in the center of the city, hundreds of houses were replaced by wide avenues and city