Here's a look at some of the major sites destroyed by IS in Iraq and Syria.

In addition to the violence in Baghdad, the final week of Ramadan saw suicide attackers strike near one of Islam's holiest sites in Saudi Arabia, in an upscale neighborhood of the capital of Bangladesh, and at the international airport in Turkey's commercial hub of Istanbul.

Despite the territorial defeats the Islamic State suffered over the past year, the Sunni extremist group is still capable of launching significant attacks across the country.