How Mecca has transformed over the last century

Pilgrims in 1920 at the Kaaba, Mecca, Saudi Arabia, the most sacred site in the Islamic religion.

Mecca's great mosque, Mecca, Saudi Arabia, 1922.

 CIRCA 1935: 

Aerial view of the Mecca with the porticoes which surround the Ka'bah.

The Kaaba in the centre of the Masjid -Ul-Haram in Mecca, Saudi Arabia, 21st March 1967.

The Kaaba in the centre of the Masjid al-Haram in Mecca, Saudi Arabia, circa 1979.

Picture dated May 1988 shows Muslim pilgrims during the Hajj in KABA.

MECCA, SAUDI ARABIA: Aerial view of the holy Kaaba in the holy city of Mecca 17 March 2000.

Hundreds of thousands of Muslim pilgrims throng Mecca's Grand Mosque, Islam's holiest shrine, late 11 December 2001 to mark the 27th night of the holy fasting month of Ramadan, known as Lailat- Ul-Qadr.

Muslims pray 23 January 2004 at the Grand Mosque in the holy city of Mecca ahead of the hajj, which begins on January 30.

MECCA SAUDI ARABIA - JANUARY 14: Muslim pilgrims pray around the holist Al-Ka'aba mosque January 14, 2005 in Mecca Saudi Arabia.

An aerial view shows the Grand Mosque, Islam's holiest site, amid booming construction in the Saudi city of Mecca on December 9, 2008.

A picture shows the under construction Mecca Royal Clock Tower hotel complex in the holy Saudi city of Mecca on April 13, 2010.

An aerial view shows Muslim pilgrims walking around the Kaaba in the Grand Mosque of the holy city of Mecca on August 6, 2012.

The tallest clock tower in the world with the world's largest clock face at the Abraj Al-Bait Towers overlooks the Grand Mosque and its expansion in Mecca, Saudi Arabia, Wednesday, Oct. 16, 2013.

 Now on 4 of october 2014 millions of peoples gethered & perform hajj in macca.