UNESCO Campaign for Venice - Khmer Republic (Cambodia)

 SG 316.  Stylised flood water and St Mark's lion. 

SG 317.  Stylised flood water and Bridge of Sighs. 

 SG 318.  Stylised flood water and St Mark's Basilica.

There is also a Mini Souvenir Sheet (MS 319) which I'm currently missing :-(.  Hopefully soon...