The Undercity is the capital city of the Forsaken undead of the Horde. It is located in Tirisfal Glades, at the northern edge of the Eastern Kingdoms.
The Undercity was so named many years before the Forsaken claimed it as their own. Far beneath the palace of Lordaeron, the Undercity held the ancient crypts and catacombs of Lordaeron's royalty, as well as the city's dungeons and sewers. Although the Undercity was only intended for prisoners and the dead, the poorest of the Lordearon people lived within. When the Alliance captured Orgrim Doomhammer, they sent him to the Undercity; sometime later he managed to escape and wandered for many years afterwards.
Lordaeron's capital city stood for centuries, a monument to humanity's might. In the Third War, Prince Arthas slew his father, King Terenas, in Lordaeron’s throne room and ransacked the city. He planned to use Lordaeron as his capital on this continent and ordered his minions to expand the catacombs beneath the city. Then the Lich King summoned Arthas to Northrend and the work was left uncompleted.
During Arthas' exodus, Sylvanas Windrunner broke free of the Lich King’s control and took many banshees and other undead with her. With Varimathras' assistance she defeated the dreadlords that controlled the city and set her newly dubbed Forsaken to finish Arthas' job in the dungeons. The Forsaken carved the Undercity and now rule the surrounding countryside.
Wrath of the Lich King:
While the forces of the Horde and the Alliance were concentrated on a joint effort at Angrathar the Wrathgate, an uprising broke out within the Undercity. Demons of the Burning Legion and Forsaken rebels led by the dreadlord Varimathras and Grand Apothecary Putress managed to take control of the Undercity, killing several Forsaken and nearly killing the Dark Lady as well. In response the Horde led by Sylvanas Windrunner and Warchief Thrall attacked from the front entrance to reclaim the city. While the Alliance led by Varian Wrynn and Jaina attacked from Sewers to restore Lordaeron to the Alliance. The ensuing battle ultimately killed both Varimathras and Putress, along with their fellow demons and Forsaken rebels.
However being no stranger to broken dreams, it is only fitting that Lordaeron bore witness to the end of the Horde-Alliance treaty as King Varian declared war upon the Horde after seeing the status of the once proud city. Jaina subsequently teleported the Alliance back to Stormwind City.
With Patch 3.3.0, Thrall sent a legion of Kor'kron Guard led by captain Bragor Bloodfist, who replaced Varimathras, with Kor'kron Overseers replacing the Undercity Guardians, in order to ensure that the events of the Battle of Angrathar the Wrathgate never occur again.
The Undercity is an extension of the crypts and dungeons originally beneath Lordaeron's capital city. The Forsaken dredged out complex catacombs and caverns. The place is dark, smells of corpses and has an evil feel. Spiders, oozes and other subterranean creatures occupy the distant passages. It is drastically different from any of the other capital cities for the Horde. Unlike Thunder Bluff and Orgrimmar, which are at the surface and often the sites of multiple festivals, the Undercity is dark, dreary, and cold. The Forsaken, however, are known for holding two festivals, Hallow's End and Pilgrim's Bounty.
The city is made up of roughly symmetrical quarters arranged around a circular center.
- Ruins of Lordaeron (outdoors area beyond and including the entry area)
- Trade Quarter (city center at the bottom elevator exits)
- Rogues' Quarter (southeast from the Trade Quarter)
- Magic Quarter (northeast from the Trade Quarter)
- War Quarter (northwest from the Trade Quarter)
- The Apothecarium (southwest from the Trade Quarter)
- Royal Quarter (south from Apothecarium entrance)
- Sewers (through tunnel west of city)
- Canals (interspaced between the different quarters)
Orb of Translocation:
Since the release of The Burning Crusade, players with the expansion are able to access an Orb of Translocation to the Silvermoon City palace, making it easy for anyone to travel between the two cities without having to go through the Plaguelands. The translocator works both ways. The Undercity orb is located in a newly opened city section west off the main part of the Ruins of Lordaeron. The translocator teleports you to the Inner Sanctum of the Sunfury Spire within Silvermoon City.
King Terenas' Tomb:
Although the memorial to King Terenas appears to be a stone tomb, it was shown in Warcraft III: Reign of Chaos that after his death, Terenas was cremated. Furthermore, the urn containing his ashes was used to resurrect the Lich Kel'Thuzad. It is unknown what happened to the King's remains after this point. Even if it does not actually contain his remains, it is speculated that the memorial was made by members of the Forsaken with fond memories of their former King, but the true origins of the tomb remain unknown.
The Throne Room:
When you stand in the Throne Room, at least in the center of the circle on the floor, with the ambient sound turned all the way up, in the background noises you can hear small clips of Arthas, Medivh, and King Terenas. For those who wish to hear this without venturing into the Undercity, the ambient sound file is located at (WoW Directory)\Data\Sound\Ambience\WMOAmbience\UnderCityThorneRoom.wav. If you look closely on the floor of the throne room, near the foot of the throne, you can see a small trail of blood that was left by the crown as it rolled onto the floor.
By the same token, in the outer hall leading into the throne room, one can hear the celebration of Arthas' return by Lordaeron's citizens. The floor is littered with dead rose petals, the same ones seen showering Arthas during the cutscene in Warcraft III.
When standing by the bell outside of the throne room you can hear it ringing.
From her throne in the Royal Quarter, the banshee queen Lady Sylvanas Windrunner rules with the support of the dreadlord Varimathras (Bragor Bloodfist, post-Battle for the Undercity) and the ghostly Sharlindra. Other luminaries include Bethor Iceshard, who is a powerful wizard that heads the joint warlock and mage guilds in the Undercity, and Master Apothecary Faranell of the Royal Apothecary Society.