Gilneas City (also known as Greymane City) is the capital city of the Kingdom of Gilneas. It is a dark and foreboding place of narrow cobblestone streets and crowded, gothic houses. There appears to be a central square with a cathedral in it. It seems that Genn Greymane lives in Greymane Manor, which is outside the city.
Gilneas City is the initial starting zone for worgen in World of Warcraft: Cataclysm. Players begin as unafflicted humans and witness the initial invasion of the wild worgen. During escape while helping the citizens evacuate, the player's character is bitten by one of them and infected. Though the player is able to help push back the worgen invasion, the character succumbs to the curse and becomes just as wild as the attackers. The next phase of the story occurs in Gilneas, outside the city, and when the player eventually returns to the City, it is to use these new worgen abilities to drive back the invading Forsaken.
Due to it being the phased beginning zone of the worgen, there is no way to reach the playable phases of Gilneas from the outside, and no way to return to them once players have departed. Gilneas City can be entered, but it is completely abandoned.
Players meet a variety of notable characters here, chief among them Genn Greymane, the leader of the worgen. Lord Darius Crowley is perhaps the second most notable, one of the Gilnean nobles who disagreed with Genn's decision to leave the Alliance, so much that he organized a civil war against his king. For his efforts he was imprisoned, but he later helped Genn and the others in their fight against the feral worgen and then the Forsaken.
Quests within Gilneas City have dark and foreboding feel to them. Perhaps the only moment of tranquility is when players first arrive, but it is the calm before the storm, for immediately upon completing their first quest the city is attacked by feral worgen. Most quests have to do with holding these foes at bay long enough to help evacuate different parts of the city, while others deal with convincing allies to help (Darius Crowley) and rescuing them from prison. Worgen are the ever-present foe, but in the end, players succumb to the same curse. Further quests down the line bring players back to the city to contend with the Forsaken invasion, helping to drive out Sylvanas Windrunner and her troops.