Alexandria Library

The Royal Library of Alexandria or Ancient Library of Alexandria in Alexandria, Egypt, was one of the largest and most significant libraries of the ancient world. It was dedicated to the Muses, the nine goddesses of the arts. It flourished under the patronage of the Ptolemaic dynasty and functioned as a major center of scholarship from its construction in the 3rd century BC until the Roman conquest of Egypt in 30 BC, with collections of works, lecture halls, meeting rooms, and gardens. The library was part of a larger research institution called the Musaeum of Alexandria, where many of the most famous thinkers of the ancient world studied
The library was created by Ptolemy I Soter, who was a Macedonian general and the successor of Alexander the Great.Most of the books were kept as papyrus scrolls. It is unknown precisely how many such scrolls were housed at any given time, but estimates range from 40,000 to 400,000 at its height.

Arguably, this library is most famous for having been burned down resulting in the loss of many scrolls and books; its destruction has become a symbol for the loss of cultural knowledge. Sources differ on who was responsible for its destruction and when it occurred. The library may in truth have suffered several fires over many years. Possible occasions for therange partial or complete destruction of the Library of Alexandria include a fire set by the army of Julius Caesar in 48 BC and an attack by Aurelian in the 270s AD.

After the main library was destroyed, scholars used a "daughter library" in a temple known as the Serapeum, located in another part of the city. According to Socrates of Constantinople, Coptic Pope Theophilus destroyed the Serapeum in AD 391, although it is not certain what it contained or if it contained any significant fraction of the documents that were in the main library. The library may have finally been destroyed during the Muslim conquest of Egypt in (or after) AD 642.