Gulltown is the major port city of the Vale of Arryn. It is located at the northern tip of the Bay of Crabs, southeast of the Eyrie and south of nearby Runestone. It is the largest city in the Vale, but is much smaller than Oldtown and King's Landing. It is ruled by House Grafton and also contains a cadet branch of the Vale's rulers, House Arryn of Gulltown. Gull Tower is also located at Gulltown.
Gulltown is an important port and portal to the Vale, its sheltered harbor offering anchorage to ships traveling from King's Landing to Braavos or the North. Its strategic location means it never lacks for trade in many of the exotic goods making their way from across the narrow sea, keeping the Vale supplied even when the passes of the Mountains of the Moon are closed in winter.