“Mhysa” Filming Locations
Game of Thrones episode “Mhysa” was filmed in Dubrovnik in Croatia and Aït Benhaddou in Morocco.
Pile Gate as Small King's Landing Gate
Jamie and Brienne arrive in King's Landing after their ordeals on the road.
River Gate at Aït Benhaddou as Big Yunkai Gate
Daenerys meets with the slaves of Yunkai outside the walls of the city and is praised by them. The gate the slaves leave through appears to have been constructed for filming.
Source: Winter Is Coming