Windhelm is a port city in northeastern Skyrim and capital of Eastmarch, close to the border with Morrowind. Its the oldest city in the whole Province, and the former capital of Skyrim during the time of Ysgramor, but is no longer.
Kynesgrove is a small mining settlement located in Eastmarch. It is located directly south of Windhelm, half-way on the road between the Windhelm Stables and Witchmist Grove, and one-third of the distance to the Atronach Stone. It was originally started as a lumber camp until it was discovered these trees were sacred to Kyne. The settlement now mines malachite.
The Ghost Sea is the treacherous body of water to the North of Skyrim. Cold and filled with Ice Bergs, it feeds into the White and Karth Rivers. Major ports on it are Solitude and Windhelm.
(the Eastmarch portion)