From A Wiki of Ice and Fire
Queenscrown is an abandoned holdfast and village south of the Wall. Queen Alysanne Targaryen once slept at the holdfast so they painted the merlons atop the tower gold. A stone causeway lies beneath the water that surrounds the holdfast. The third floor of the holdfast has arrow slits, the fourth had windows and the fifth floor was one large round chamber with three sides opening onto stone balconies. Along the fourth side sat the privy. The remnants of an inn and village can still be seen.
A Storm of Swords
Bran, Hodor, Meera and Jojen stay overnight at Queenscrown on their march to the Wall. They waited for a storm to pass and while they waited, a man passing through arrived and stayed in the ruined village to wait out the storm too. Jon Snow arrived with the wildlings he was travelling with and they captured the man. Jon was ordered to kill the man, but balked and Ygritte killed the man anyway.