Be sure to check out Antoine Watteau's "The Embarkation for Cythera", which is said to have been the inspiration for this music.
https://commons.wikimedia.org/wiki/File:Antoine_Watteau_035.jpg
Poulenc also wrote a piece for two pianos on the same subject, "L'embarquement pour Cythere", but the atmosphere is very different from Debussy's work.
Debussy: L'Isle joyeuse
Katsunori Maeda (Piano)