The Musaeum or Mouseion at Alexandria (Ancient Greek: Μουσεῖον τῆς Ἀλεξανδρείας), which included the famous Library of Alexandria, was an institution founded by Ptolemy I Soter or, perhaps more likely, by Ptolemy II Philadelphus. This original Musaeum ("Institution of the Muses") was the home of music or poetry, a philosophical school and library such as Plato's Academy, also a storehouse of texts. It did not have a collection of works of art, rather it was an institution that brought together some of the best scholars of the Hellenistic world, analogous to a modern university. This original Musaeum was the source for the modern usage of the word museum.
The Musaeum was an institution founded, according to Johannes Tzetzes, by Ptolemy I Soter (c. 367 BC – c. 283 BC) or, perhaps more likely, by Ptolemy II Philadelphus (309–246 BC) at Alexandria. The Mouseion remained supported by the patronage of the royal family of the Ptolemies. Such a Greek Mouseion was the home of music or poetry, a philosophical school and library such as Plato's Academy, also a storehouse of texts.Mouseion, connoting an assemblage gathered together under the protection of the Muses, was the title given to a collection of stories about the esteemed writers of the past assembled by Alcidamas, an Athenian sophist of the fourth century BC.
Though the Musaeum at Alexandria did not have a collection of sculpture and painting presented as works of art, as was assembled by the Ptolemies' rival Attalus at the Library of Pergamum, it did have a room devoted to the study of anatomy and an installation for astronomical observations. Rather than simply a museum in the sense that has developed since the Renaissance, it was an institution that brought together some of the best scholars of the Hellenistic world, as Germain Bazin compared it, "analogous to the modern Institute for Advanced Study in Princeton or to the Collège de France in Paris." In the 21st century, the nearest equivalent is a university.