It's also a very popular farming spot especially designed for Blizzard Sorceress build. At the end of the dungeon Random Unique Monsters will spawn and a glittering treasure chest that has items for the endgame buy D2R ladder items. Be sure you have Magic Find gear or compensate for the absence of it by repeating the run a few times.
Arcane Sanctuary (Act 2)To be explicit, the monsters in Arcane Sanctuary are too spread over the area to produce material. In the game, taking on the most difficult bosses is a much better target to kill when that's the way you want to collect loot.
But after getting some method that allows Teleport (either using the Sorceress skills or Enigma Runeword), there are Super Chests there that provide amazing items without having to fight. Arcane Sanctuary Arcane Sanctuary is an ideal area for chest farming for characters who aren't quite able yet to single-hit their enemies.
Lower Kurast (Act 3)Speaking of chests, there's plenty them to be found in the Act 3 location, namely Lower Kurast. It's abbreviated as LK diablo II resurrected items. The farming strategy that's feasible here may be suitable for single-player only or offline sessions but worth a try anyway.