Dubrovnik
Pile Gate -Entrance to old town Game of Thrones site where the mob attacks Joffrey
“Kill them. Kill them all!” – Season 2, Episode 6
The Pile Gates is used on multiple occasions. Notably, when Marcella is being sent away to Dorne and Joffrey is returning to the castle by foot, only to get harassed by angry mobs. Also, Sansa had the close call but thankfully the Hound saved her.
By day, thousands of tourists enter and exit these gates. It serves as the gateway into the Old City walls. It gets so crowded they have to rope off the gates to guide people which direction to walk to avoid congestion.