The Twins

The Twins, sometimes known as the Crossing, is the seat of House Frey in the northern Riverlands. It is a fortified crossing of the Green Fork of the Trident and consists of two identical castles and a tower in the middle of their bridge. It is one of the most formidable strongholds of the Seven Kingdoms.

Layout
The Twins consist of two identical stone castles standing on a margin of the Green Fork of the Trident. They have high curtain walls, deep moats, and a barbican and portcullis in each. Channels can be dug to form moats, turning each castle into an island. An apple orchard and a cornfield are near the eastern castle.

A stone bridge arches between the castles, with the bridge footings rising from within the inner keeps. This bridge is wide enough for two wagons to cross abreast. It is the only crossing point over the Green Fork for hundreds of miles in either direction, from the north to the western Riverlands. It lies directly athwart the main route from Winterfell to Riverrun.

The bridge is guarded in the middle by the Water Tower. This structure has arrow slits, murder holes, and portcullises for defence. Guests of honour can reside in its chambers and at least one suite and their featherbeds have corner posts carved in the shape of towers.

The seat of the Lord of the Crossing, located in the great hall of the east castle, is a massive chair of black oak. Its back is carved in the shape of two towers joined by an arched bridge.