Bitterbridge

Bitterbridge is a castle in Game of Thrones. It is a holdfast in the Reach, the region controlled by House Tyrell of Highgarden. The castle is located in the north east of the region where the Mander first crosses the Roseroad.

In the books
In the Song of Ice and Fire novels Bitterbridge is the seat of House Caswell. Its location is the same.