Hall of Dark Arts is a "dungeon" that can be found in Act V of Diablo III. It is actually a very small house located in the Westmarch Commons.
Event[]
Main article: Necromancer's Choice
The Hall contains a Cursed Chest connected to the Necromancer's Choice event, which is started by speaking to Mehtan the Necromancer who stands on a platform above it. The event always appears inside the Hall as long as they are present at all in a game session. The building contains nothing else, other than the monsters that spawn for the event.