Dungeons and Raids

Name	Level	Min. Level	Players	Location	Type	Bosses
Ragefire Chasm	13	10	5	Orgrimmar	Dungeon	4
The Hall of Thanes	13		5		Dungeon	4
Ruins of Lordaeron	15		5		Dungeon	7
Deadmines	16	10	5	Westfall	Dungeon	8
Wailing Caverns	17	10	5	The Barrens	Dungeon	8
Shadowfang Keep	18	11	5	Silverpine Forest	Dungeon	8
Blackfathom Deeps	22	15	5		Dungeon	7
Stormwind Stockade	23	15	5		Dungeon	5
Razorfen Kraul	24	25	5		Dungeon	6
Gnomeregan	25	19	5	Dun Morogh	Dungeon	5
Excavation Site: Wetlands	26		5		Dungeon	4
City of Dalaran	28		5		Dungeon	9
Scarlet Monastery	30	20	5		Dungeon	7
Razorfen Downs	34	35	5		Dungeon	6
Uldaman	35	30	5	Badlands	Dungeon	8
Maraudon	42	25	5	Desolace	Dungeon	8
Zul'Farrak	42	39	5		Dungeon	8
Sunken Temple	45	45	5	Swamp of Sorrows	Dungeon	8
Blackrock Depths	48	42	5	Searing Gorge	Dungeon	21
Blackrock Spire	53	48	10	Burning Steppes	Dungeon	14
Dire Maul	54	31	5	Feralas	Dungeon	19
Stratholme	55	37	5	Eastern Plaguelands	Dungeon	19
Scholomance	57	33	5	Western Plaguelands	Dungeon	14
Blackwing Lair	60		40	Burning Steppes	Raid	8
Molten Core	60	50	40	Burning Steppes	Raid	11
Onyxia's Lair	60		40	Dustwallow Marsh	Raid	1
Zul'Gurub	60		20	Stranglethorn Vale	Raid	10
Ahn'Qiraj Temple			40	Silithus	Raid	9
Naxxramas			40		Raid	15
Ruins of Ahn'Qiraj			20	Silithus	Raid	6

Level is the instance's content level in the client; Min. Level the level needed to enter. The client files carry no loot tables, so none are shown.

Announced, not yet in the game files: