WoW: Instances By Level

Ragefire Chasm: For levels 13-16, recommended levels 14+. Located in Orgrimmar, making it difficult for Alliance to reach except through the Dungeon Finder. Bosses include Taragaman the Hungerer, Oggleflint, Jergosh the Invoker, and Bazzalan.

The Deadmines: For levels 15-20, recommended levels 16+. Located in Westfall. Bosses include Rhahk'Zor, Sneed, Gilnid, Mr. Smite, Captain Greenskin, Cookie, and Edwin Vancleef.

Wailing Caverns: For levels 15-21, recommended levels 18+. Located in The Barrens. Bosses include Lady Anacondra, Lord Cobrahn, Kresh, Lord Pythas, Skum, Lord Serpentis, Verdan the Everliving, and Mutanus the Devourer.

Shadowfang Keep: For levels 18-25, recommended levels 20+. Located in Silverpine Forest. Bosses include Rethilgore, Razorclaw the Butcher, Baron Silverlaine, Commander Springvale, Odo the Blindwatcher, Fenrus the Devourer, Wolf Master Nandos, and Archmage Arugal.

Blackfathom Deeps: For levels 20-27, recommended levels 24+. Located in Ashenvale Forest. Bosses include Ghamoo-ra, Lady Sarevess, Gelihast, Lorgus Jett, Baron Aquanis, Twilight Lord Kelris, Old Serra'kis, and Aku'mai.

The Stockade: For levels 24-32, recommended levels 24+. Located in Stormwind, making it difficult for Horde to reach except through the Dungeon Finder. This instance is also know for offering almost no item drops from bosses. Bosses include Targorr the Dread, Kam Deepfury, Hamhock, Bazil Thredd, and Dextren Ward.

Gnomeregan: For levels 24-33, recommended levels 26+. Located in Dun Morogh, and accessible by Horde only through Booty Bay. Bosses include Techbot, Viscous Fallout, Grubbis, Electrocutioner 6000, Crowd Pummeler 9-60, and Mekgineer Thermaplugg.

Razorfen Kraul: For levels 25-30, recommended levels 26+. Located in The Barrens. Bosses include Roogug, Aggem Thorncurse, Death Speaker Jargba, Overlord Ramtusk, Agathelos the Raging, and Chargla Razorflank.

Scarlet Monastery: For levels 34-45, recommended levels 35+. Located in Tirisfal Glades, and composed of four wings (Cemetery, Library, Armory, and Cathedral), two of which require a key from the Library wing. Bosses include Interrogator Vishas, Bloodmage Thalnos, Houndmaster Loksey, Arcanist Doan, Herod, High Inquisitor Fairbanks, High Inquisitor Whitemane, and Scarlet Commander Mograine.

Razorfen Downs: For levels 33-40, recommended levels 34+. Located in The Barrens. Bosses include Tuten'kash, Mordresh Fire-Eye, Glutton, and Amnennar the Coldbringer.

Uldaman: For levels 39-47, recommended levels 42+. Located in the Badlands. Bosses include Revelosh, The Lost Dwarves, Ironaya, Obsidian Sentinel, Ancient Stone Keeper, Galgann Firehammer, Grimlok, and Archaedas.

Zul'Farrak: For levels 43-47, recommended levels 44+. Located in Tanaris. Bosses include Antu'sul, Theka the Martyr, Witch Doctor Zum'rah, Nekrum Gutchewer, Hydromancer Velratha, Gahz'rilla, Shadowpriest Sezz'ziz, Ruuzlu, and Chief Ukorz Sandscalp.

Maraudon: For levels 43-49, recommended levels 45+. Located in Desolace. Bosses include Noxxion, Razorlash, Lord Vyletongue, Celebras the Cursed, Landslide, Tinkerer Gizlock, Rotgrip, and Princess Theradras.