Home2009 Treaties and Agreements ...Bulgaria (09-1130) – Agreement on the Protection and Preservation of Certain Cultural Properties hide Bulgaria (09-1130) – Agreement on the Protection and Preservation of Certain Cultural Properties TIAS Office of Treaty Affairs November 30, 2009 Cultural Exchanges, Property and Cooperation Agreement signed at Washington December 5, 2002; entered into force November 30, 2009. Download attachment [332 KB] Tags Bulgaria Cultural Properties Treaties