Castalia /kəˈsteɪliə/ (Ancient Greek: Κασταλία, romanized: Kastalia), in ancient Greek and Roman literature,^[1] was the name of a spring near Delphi, sacred to the Muses; it is also known as the Castalian Spring. It is said to have derived its name from Castalia, a naiad-nymph, daughter of the river-god Achelous, who is said to have flung herself into the spring when pursued by the god Apollo.^[2]

Quick Facts Grouping, Sub grouping ...

Castalia

Water Ritual at Delphi
Grouping	Legendary creature
Sub grouping	Water spirit
Country	Greece
Region	Delphi

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In older traditions, the Castalian Spring already existed by the time Apollo came to Delphi searching for Python.^[3] According to some, the water was a gift to Castalia from the river Cephisus.

In his commentary on Statius's Thebaid, Latin poet Lactantius Placidus says that to escape Apollo's amorous advances, Castalia transformed herself into a fountain at Delphi, at the base of Mount Parnassus, or at Mount Helicon.^[4][5] She inspired the genius of poetry to those who drank her waters or listened to their quiet sound; the sacred water was also used to clean the Delphian temples. Apollo consecrated Castalia to the Muses (Castaliae Musae).

The 20th-century German writer Hermann Hesse used Castalia as inspiration for the name of the futuristic fictional utopia in his 1943 magnum opus The Glass Bead Game. Castalia is home to an austere order of intellectuals with a twofold mission: to run boarding schools for boys, and to nurture and play the Glass Bead Game.

• Castalian Spring
• Castalia House
• 4769 Castalia, an Earth-crossing asteroid
• 646 Kastalia, an asteroid