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Oh la la! Rockers Avril Lavigne and Chad Kroeger sure have sophisticated taste when it comes to choosing a wedding destination.

The couple wed in the South of France on Monday, opting for the 14th century castle Chateau de la Napoule for the ceremony and reception. Located in the cozy, coastal town of Mandelieu about 30 minutes west of Cannes, the fortress boasts stunning courtyards, picturesque ocean views, and lush gardens.

Sources in France tell us that Avril and Chad's ceremony commenced at 8 p.m. and the reception and dinner ended at 6 a.m. on Tuesday. About 50 of the singers' closest friends and family attended the destination wedding. The duo said their "I dos" in a courtyard with views of the coastline just outside of the castle. Guests later watched fireworks over the sea. The newlyweds viewed the spectacle atop a balcony.

In addition to acting as a luxe location for weddings, corporate events, and other private parties, the historic landmark triples as a museum and artistic retreat.

The La Napoule Art Foundation is a non-profit organization that promotes art and nurtures artistic talent. Its artist residency program provides aspiring artists with a space to develop and display their work. Meanwhile, the foundation's arts center partners with universities across the world to host master classes and workshops. LNAF holds exhibitions, community outreach programs, and children's art programs in the U.S. as well.

The medieval castle was restored in 1914 by New Yorkers Henry and Marie Clews. The lovebirds spent 17 years transforming the building -- adding a gate house, tall ramparts, seaside terraces, and acres of gardens -- until it became the art retreat of their dreams.

Check out the gallery below for additional images of Chateau de la Napoule.