Home2010 Treaties and Agreements ...Poland (10-803) – Agreement on the Protection of Certain Cultural Properties hide Poland (10-803) – Agreement on the Protection of Certain Cultural Properties TIAS Office of Treaty Affairs August 3, 2010 Cultural Exchanges, Property and Cooperation Agreement signed at Washington May 11, 2004; entered into force August 3, 2010. Download attachment [434 KB] Tags Cultural Properties Poland Treaties