The Riverlands are located right in the middle of Westeros — south of the North, east of the Westerlands, and north of King's Landing.
Notable locations:
- Riverrun: This is the seat of the ruling family, the Tullys. It's where Catelyn and Lysa were born and where Jaime faces down the Blackfish in season six.
- The Twins: Consisting of two twin towers, this is the seat of House Frey, which becomes the ruling house in the Riverlands in season three after the Red Wedding. Walder Frey and his sons are killed at The Twins in season six by Arya Stark.
- Harrenhal: This is a gigantic castle used as a camp by the Lannister army in season two during the War of the Five Kings. It's where Arya serves Tywin in disguise as his cupbearer after escaping King's Landing in season one. Arya is also introduced to Jaqen H'ghar at Harrenhal, and he helps her escape along with Gendry and Hot Pie. Control of the castle is given to Littlefinger in season two.