Blue Lagoon, Ölüdeniz. Ölüdeniz is a resort village on the southwest coast of Turkey. It’s known for the blue lagoon of Ölüdeniz Tabiat Parkı and the wide, white Belcekız Beach. Overlooking the village is Babadağ mountain from where paragliders take to the skies. The Lycian Way is a long-distance marked footpath starting in Ölüdeniz, and has coastal views. To the south, Butterfly Valley is a nature reserve with a secluded bay.