La Seine Musicale is a music and performing arts center located on Île Seguin an island on the Seine river between Boulogne-Billancourt and Sèvres, in the western suburbs of Paris, France.

Île Seguin is an island on the Seine river between Boulogne-Billancourt and Sèvres, in the west suburbs of Paris, France. It has a surface area of approximately 11.5 hectares, and is positioned opposite Meudon, a short distance downstream from the Île Saint-Germain. Administratively Meudon and the island are included as part of Boulogne-Billancourt, on the river's right bank, rather than of Sèvres on the left bank.