Web results. Located on the shores of Lake Clarens, on the road to Mont-de-Marsan, come try your luck at the Casino Casteljaloux. 48 reviews. Casteljaloux (47) 05 53 64 87 00 05 53 64 87 Restaurants near Casino de Casteljaloux ; L'Ozio. #9 of 15 in Casteljaloux ; L'Aromatique. [HOST] Casino de Casteljaloux: Accueil Casino Arévian Casteljaloux. 51 reviews. Concerts and musical entertainment. . #5 of 15 in Casteljaloux ; Restaurant Lou Green.