The House of Wisdom, also known as the Grand Library of Baghdad, was believed to be a major Abbasid-era public academy and intellectual center in Baghdad. In popular reference, it acted as one of the world's largest public libraries during the Islamic Golden Age, and was founded either as a library for the collections of the fifth Abbasid caliph Harun al-Rashid in the late 8th century or as a private collection of the second Abbasid caliph al-Mansur to house rare books and collections of poetry in the Arabic and Persian language. During the reign of the seventh Abbasid caliph al-Ma'mun, it was turned into a public academy and a library.

The siege of Baghdad took place in early 1258 at Baghdad, the historic capital of the Abbasid Caliphate. After a series of provocations from the city's ruler, Caliph al-Musta'sim, a large army under the Mongol prince Hulegu attacked the city. Within a few weeks, the city fell and was sacked by the Mongol army—al-Musta'sim was killed alongside hundreds of thousands of his subjects. The city's fall has traditionally been seen as marking the end of the Islamic Golden Age; in reality, its repercussions are uncertain.