MAKKAH: As a child, Osama al-Bar would walk from his home past Islam's holiest site, the Kaaba, to the market of spice and fabric merchants where his father owned a store.

At that time, Makkah was so small, pilgrims could sit at the cube-shaped Kaaba and look out at the serene desert mountains where Prophet Muhammad (PBUH) once walked.

In this Sept. 7, 1954 file photo, Muslims visit the Kaaba, the Sacred House of Allah, during a pilgrimage to Makkah, Saudi Arabia. — Photo by AP

Now the market and the homes are gone. Monumental luxury hotel towers crowd around the Grand Mosque where the Kaaba is located. Steep rocky hills overlooking the mosque have been levelled and are now covered with cranes building more towers in row after row.

“My father and all the people who lived in Makkah wouldn't recognise it,” said al-Bar, who is now Makkah's mayor.

As Muslims from around the world stream into Makkah for the annual Haj pilgrimage this week, they come to a city undergoing the biggest transformation in its history.

Decades ago, this was a low-built city of centuries-old neighbourhoods over the years, it saw piecemeal renewal projects. But in the mid-2000s, the kingdom launched its most ambitious overhaul ever with a series of mega-projects that, though incomplete, have already reshaped Makkah.

Old neighbourhoods have been erased for hotel towers and malls built right up to the edge of the Grand Mosque. Historic sites significant for Islam have been demolished.

Next to the Kaaba soars the world's third tallest skyscraper, topped by a gigantic clock, which is splashed with coloured lights at night.

In this Wednesday, Oct. 16, 2013 file photo, shows 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 Makkah, Saudi Arabia. — Photo by AP

“It's not Makkah. It's Makkah-hattan. This tower and the lights in it are like Vegas,” said Sami Angawi, an architect who spent his life studying Haj and is one of the most outspoken critics of the changes.

“The truth of the history of Makkah is wiped out ... with bulldozers and dynamite. Is this development? “

Critics complain the result is stripping the holy city of its spirituality. They also say it is robbing the Haj of its more than 1,400-year-old message that all Muslims, rich or poor, are equal before God as they perform the rites meant to cleanse them of sin, starting and ending by circling the Kaaba seven times.

Makkah is revered by hundreds of millions of Muslims worldwide. They face the Kaaba every day in their prayers. The Grand Mosque is one of the few places in the world where Muslims of all stripes gather.

Overseeing Makkah is also a key source of prestige for Saudi Arabia's monarchy.

The past two kings — the current one, Abdullah, and his predecessor, Fahd — have adopted the further title of “custodian of the two holy mosques” to boost their status, referring to Makkah's Grand Mosque and Prophet Muhammad's mosque in nearby Medina.

In this photo taken May 11, 2014, Essam Kalthoum, left, managing director of the Bawabat Makkah Company, which oversees several projects around the city, shows at his office in Jiddah, Saudi Arabia, a prototype of what the heart of Makkah will look like after construction around the Grand Mosque is complete. — Photo by AP

Two forces shape that vision.

One is raw, petrodollar-fueled capitalism. Makkah's planners are largely catering to wealthier pilgrims by focusing on construction of five-star hotels, surrounding the Kaaba in marble-sheathed luxury.

Nearby pilgrims can shop at international chains, including a Paris Hilton store and a gender-segregated Starbucks.

The other force is Wahhabism, the strict, puritanical interpretation of Islam that the Al Saud rulers elevated to the country's official doctrine. In return, Wahhabi clerics staunchly back the monarchy. The monarchy has long given Wahhabi clerics a monopoly of preaching at the Kaaba.

One tenet of Wahhabism is that Muslim tombs or sites connected to revered figures -- even the Prophet Muhammad (PBUH), his family and companions, should be destroyed to avoid veneration of anything other than God.

In Makkah, hardly any site associated with the prophet (PBUH) remains. Many were destroyed in previous expansions of the Grand Mosque in the 1980s and 1990s, and the new development is finishing off much of what remains. There are many examples.

In 2008 the house of Hazrat Abu Bakr, was razed to make way for a Hilton.

The country's top religious official, Grand Mufti Abdul-Aziz Al-Sheik, backed such demolitions last year, saying “the removal of such things within the expansion is necessary."

The urban renewal is necessary, Saudi officials say, to accommodate hajj pilgrims whose numbers are expected to swell from around three million currently to nearly seven million by 2040.

The $60-billion Grand Mosque expansions will almost double the area for pilgrims to pray at the Kaaba.

Nov. 17, 2010 file aerial image made from a helicopter shows Muslim pilgrims moving around the Kaaba, the black cube seen at center, inside the Grand Mosque, during the annual Hajj in Makkah, Saudi Arabia. — Photo by AP

Around half the cost went to buying about 5,800 homes that had to be razed for the expansion, said al-Bar, the Makkah mayor. Domes and pillars dating back to rule by the Ottoman Empire are being pulled down to put up modern facilities.

Another mega-project is Jabal Omar, a hill on the mosque's west side. The hill — a landmark in the city — was levelled and in its place, construction of around 40 towers is underway, mostly for luxury hotels providing some 11,000 rooms. The first of the Jabal Omar hotels, a Hilton Suites and the Anjum Hotel, just opened in the past few months.

On the mosque's south side stands the 1,972-foot clock-tower skyscraper, part of a completed seven-tower complex that was built after tearing down an Ottoman fort on the site.

Also underway is the Jabal Sharashif project, in which a slum that largely houses Burmese and African migrants is to be torn down to build a new neighbourhood for Saudis, along with hotels.

A four-line metro system is planned for the city along with a high-speed rail line to the port city of Jeddah, where the area's airport is located, and to Madina.

The Grand Mosque's expansion is being headed by the Saudi Binladin Group, which also built the clock tower. The Binladin family has been close to Al Sauds for decades and runs major building projects around the country.

Speaking at a public forum in Jeddah in May, Nawaf Binladin, whose father is chairman of the conglomerate, said people are constantly asking if all this construction is needed.

“This can be answered in one moment in this image,” he said, flashing a picture of tens of thousands of worshippers praying in the street because there was not enough room inside the Grand Mosque.

But many in the audience were not convinced. Saeed al-Ghamdi, a former Saudi diplomat, said he thinks greed is the main motivator. Muslims around the world have an “intimate bond” with Makkah, he said. “It is not a place for one businessman or one company. “

Makkah's planners didn't have to build so close to the Kaaba, overwhelming the simple cube-shaped structure, said Irfan al-Alawi, a Saudi who heads the London-based Islamic Heritage Research Foundation.

The hotels could have been built miles away and transportation improved.

“Already we are losing the spirituality,” he said. Pilgrims admire the clock tower instead of “looking at the Kaaba and admiring the house of God. “

File photo of Makkah - AP

Essam Kalthoum, managing director of the government-owned Bawabat Makkah Company, which is involved in a number of projects around the city, acknowledged that “it would be a farce” to say financial motivations are not coming into play. But he said the main goal is to increase space for pilgrims.

Kalthoum showed a gift from a Turkish foundation he had just received: a photo of Makkah from the late 1800s.

“This is painful,” he said.

“For those of us who witnessed some of this (past), it brings back memories. “But he pointed to the Kaaba in the photograph. “Because of this place,” he said, the old markets and buildings had to go.