The town of Köyceğiz lies at the northern end of a lake of the same name (Köyceğiz Lake) which is joined to the Mediterranean Sea by a natural channel called Dalyan Delta. Its unique environment is being preserved as a nature and wildlife sanctuary, the Köyceğiz-Dalyan Special Environmental Protection Area. A road shaded with trees leads to the township that carries the same name as the river, Dalyan, which is situated on the inland waterway and is -administratively- a part of the neighboring district of Ortaca .