Transboundary Ramsar Site: Lake Calarasi (Iezerul Calarasi) - Srebarna; Suhaia - Belene Islands Complex; Bistret - Ibisha Island (Bulgaria - Romania), 2013: joint instrument

Srebarna (Bulgaria, designated 1975) and Lake Calarasi (Iezerul Calarasi) (Romania, 2012);
Belene Islands Complex (Bulgaria, 2002) and Suhaia (Romania, 2012);
Ibisha Island (Bulgaria, 2002) and Bistret (Romania, 2012)