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Hatra - The historic city of Hatra was an ancient fortification that stood for more than 2,000 years.

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Hatra - It was part of the Ninawa province in Iraq.

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Hatra - The Hatra ruins were designated a world heritage site by UNESCO.

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Hatra - They were completely destroyed by ISIS.

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Temple of Baalshamin - The temple was located in the ruins of the historic city of Palmyra in Syria.

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Temple of Baalshamin - Baalshamin was considered one of Palmyra's most important monuments.

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Temple of Baalshamin - Terrorists blew up the temple using explosives.

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Temple of Baalshamin - It was a huge loss for the archaeological world. Palmyra, the city where the temple stood, was also a UNESCO World Heritage Site.

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Nimrud -

According to historians, the Iraqi city had stood since approximately 1350 BCE.

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Nimrud -

Writer Agatha Christie visited the city in 1930, and described it as spectacular.

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Nimrud - According to intel from the Iraqi government, Islamic State destroyed the city.

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Nimrud - UNESCO stated that the group's actions constituted war crimes.

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Mosul museum - Another case of wanton destruction was in the city of Mosul, Iraq.

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Mosul Museum - ISIS occupied the museum for two years, after which it was completely destroyed by the terrorists.

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Mosul Museum - The Mosul Museum housed thousands of artifacts from Mesopotamian culture.

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Mosul Museum - The group destroyed the items, claiming they were against the teachings of Islam.

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Library of Mosul University - This was another target in the city of Mosul.

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Library of Mosul University - The Islamic State destroyed the Library of Mosul University.

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Library of Mosul University - Many unique items were lost in the fire, including a manuscript of the Quran, which dated back to the ninth century.

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Library of Mosul University - Despite the chaos, volunteers are said to have saved around 2,000 artifacts.

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Mar Behnam Monastery - The monastery was built by the Assyrian king Senchareb and was over 1,500 years old.

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Mar Behnam Monastery - It has a beautiful facade, and unfortunately was the target of ISIS attacks in 2015.

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Mar Behnam Monastery - Terrorists also destroyed the tombs of martyrs buried there.

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Mar Behnam Monastery - The interior of the monastery bares the scars of the terrorist attacks.

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Aleppo - One of Syria's most important cities and another UNESCO World Heritage Site.

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Aleppo - According to UNESCO, Aleppo was ruled consecutively by the Hittites, Assyrians, Arabs, Mongols, Mamluks, and Ottomans.

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Aleppo - The city was left in ruins after the Syrian Civil War.

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Aleppo -

The battle was fought between the government, rebels, terrorists, and even involved Russia.

See also: In danger: World Heritage Sites at risk of disappearing

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