Château-d'Olonne (French pronunciation: [ʃɑto dɔlɔn]) is a former commune of the Vendée department in the Pays de la Loire region of Western France.

On 1 January 2019, it was merged into the commune of Les Sables-d'Olonne.

[2]

This Vendée geographical article is a stub.

You can help Wikipedia by expanding it.