Lovrijenac Fortress, Croatia

Also known as Dubrovnik’s Gibraltar, this fortress and theatre in Dubrovnik, Croatia doubles as the Red Keep in King’s Landing, the capital of the Seven Kingdoms in Game of Thrones. It makes many appearances throughout the run of the HBO show, including serving as the setting for King Joffrey’s name day and in season eight as Cersei Lannister prepares to defend the city and during the subsequent battle. The fortress overshadows the two entrances to the city, accessed from the sea and by land. It’s most notable for resisting Venetian rule in the 11th century.