Its hard to name just one my top 3 will be ICC, Dragon Soul and believe it or not BRF
My favorite instance: Scholomance
Zul'gurub of course. It has a beautiful theme
KARAZHAN!I love the feel and the history of the place;it was also the very first raid I ever went to!:)(Also,I believe my warlock might be intending to take up residence there and plot world domination!:p)
Uldaman for sure!
Blackrock Foundry. Yes, I'm relative new to the game :)
The very first time I entered Grimrail Depot, I was having a blast, even though our dungeon team wiped three times. To date, it is my all-time favorite dungeon instance. In all my wow playing days, never had a dungeon instance been 'fun' and 'exciting' as this particular one.For Raiding, I find that Throne of Thunder is still refreshing to go through and revisit regularly. I still admire the scenery found inside this raiding instance.
Icecrown citadel for sure
I'd say Ulduar is certainly one of, if not my favourite raid instance.Though if we're talking dungeons then it's Blackrock Depth's all the way. I adored that instance. Especially since most people didn't and I was one of the few who knew where to go and what to do for the quests and bosses. My ultimate favourite part, which sadly was removed, was the quest chain to unlock the key that opened up the rest of the dungeon before looking for dungeon trivialised it and the keys were removed.
My favourite instance is by far Hall of Reflections.
My favorite instance is the original UBRS. I had the "key", so I had no problems getting into the instance. I also had no problems making gold if I didn't have time for a run. :)
My favorite instance is pre-Cataclysm deadmines. Stepping inside there for the first time with my friends when I first started the game at the start of TBC was amazing. Even though as 3 level 12 hunters we couldn't figure out why we couldn't clear a dungeon that had an entry level of 10. I remember first clearing the deadmines with a group shortly after and it was a great feeling. Deadmines holds many memories for me.
Icecrown Citadel. It used to be the instance I hated. After initially feeling like the area was specifically designed to single me out, judge me unworthy and turn me into a smear on the nearest wall it was so great to beat. The music was just right to keep you going when you were sure that Wipe "I stopped counting when I noticed I could see indentations of my face still hammered into the floor from previous tries" plus one was happening. But now; <evil grin> Strolling through it with a shadow priest and feeling the contempt the instance openly displayed to me so long ago. I hope this is what Cersei Lannister is going to feel next season as she gets her own back against the High Sparrow.
My favorite instance is Ulduar fallowed by Icecrown Citadel
my fav instances are Hyjal Summit and Well of Eternity
My FAVORITE instance would have to be the Blackrock Spires because it feels like Blizzard put the absolute most work in adding to the depth of that place
I always liked "The Culling of Stratholme". Instances that let you take part in the history of Warcraft are my favorite to do.
Black Temple for life !
Hard to pick, but will break it down into three separate categories:Favorite lore instance: ICC for providing a pretty satisfactory resolution to a story I loved so much back in WCIIIFavorite mechanics instance: Ulduar, for being so unique, beautifully designed and for bringing such new and diverse raid content and mechanics.Favorite "fun" instance: deadmines, both pre-cata and new.Honorable mention: Jaraxxus, just 'cuz "YOU FACE JARAXXUS".