'Unlike anything we have studied': Gaza's destruction in numbers

As well as killing more than 34,000 people and causing catastrophic levels of hunger and injury, the seven-month Gaza war has also caused massive material destruction in the Palestinian enclave.

"The rate of damage being registered is unlike anything we have studied before. It is much faster and more extensive than anything we have mapped," said Corey Scher, a PhD candidate at the City University of New York, who has been researching satellite imagery of Gaza.

As Israel launches an offensive on Rafah, the last population centre in Gaza yet to be entered by its ground troops, AFP looks at the territory's shattered landscape seven months into the war.

Three-quarters of Gaza City destroyed

Gaza is one of the most densely populated places on the planet, where before the war 2.3 million people had been living on a 365-square-kilometre (140-square-mile) strip of land.

According to satellite analyses by Scher and Jamon Van Den Hoek, an associate professor of geography at Oregon State University, 56.9 percent of Gaza buildings were damaged or destroyed as of 21 April, making a total of 160,000.

"The fastest rates of destruction were in the first two to three months of the bombardment", Scher told AFP.

In Gaza City, home to some 600,000 people before the war, the situation is dire: almost three-quarters (74.3 percent) of its buildings have been damaged or destroyed.

Five hospitals now rubble

During the war, Gaza's hospitals have been repeatedly attacked by Israel, which accuses Hamas of using them for military purposes, a charge the militant group denies.

In the first six weeks of the war, "60 percent of healthcare facilities… were indicated as damaged or destroyed", Scher said.

The territory's largest hospital, Al-Shifa in Gaza City, was targeted in two offensives by the Israeli army, the first in November, the second in March.

The World Health Organization said the second operation reduced the hospital to an "empty shell" strewn with human remains.

Five hospitals have been completely destroyed, according to figures compiled by AFP from the OpenStreetMap project, the Gaza health ministry and the United Nations Satellite Centre (UNOSAT). Fewer than one in three hospitals – 28 percent – are partially functioning, according to the UN.

Over 70 percent of schools damaged

The territory's largely UN-run schools, where many civilians have sought refuge from the fighting, have also paid a heavy price.

As of 25 April, UNICEF counted 408 schools damaged, representing at least 72.5 percent of its count of 563 facilities.

Of those, 53 school buildings have been completely destroyed and 274 others have been damaged by direct fire.

The UN estimates that two-thirds of the schools will need total or major reconstruction to be functional again.

Regarding places of worship, combined data from UNOSAT and OpenStreetMap show 61.5 percent of mosques have been damaged or destroyed.

More bombed-out than Dresden

The level of destruction in northern Gaza has surpassed that of the German city of Dresden, which was firebombed by Allied forces in 1945 in one of the most controversial Allied acts of World War II.

According to a US military study from 1954, quoted by the Financial Times newspaper, the bombing campaign at the end of World War II damaged 59 percent of Dresden's buildings.

In late April, the head of the UN mine clearance programme in the Palestinian territories, Mungo Birch, said there was more rubble to clear in Gaza than in Ukraine, which was invaded by Russia more than two years ago.

The UN estimated that as of the start of May, the post-war reconstruction of Gaza would cost between $30 billion and $40 billion.