It has to be Magister's Terrace.
Grimrail Depot is my favorite one. I loved the train battle concept since Vandal Hearts II.
The Botanica Beautiful place.
Best instance in the game is definitely Ulduar!So many great fights! It was the first instance in the game I really felt that tactics took a large role in over pure DPS. And the fights! Flame Leviathan was so epic! 25 players rolling around on multi person siege vehicles, while bikes buzz around them for support.I hope some day we'll see "time walking raids" and get the chance to return to that epic place.
The Vortex Pinnacle, mood is just great. Also: elemental plane
My favorite instance has to be Magister's Terrace. Yes it was a pain in the butt back in the day, but it's well done in almost all aspects. :)
I'd have to go with Ulduar as my favorite, considering how many of my toons' transmog sets drop from there.
My favorite instance is Nexus
Karazhan, I loved the atmosphere it had. ^_^
i must say my favorite instance is Scholomace. So much fun doing it with a DK mindcontrolling all undeads!
Best instance was BWL. Loved the fights and atmosphere. Karazhan would be a very close second.
My favorite would be Black Temple
Gnomer then Spires...I know ..Im sick.
The Undermine. Wrote all about it in my Journal.
The best instance is Ulduar! It's so detailed and pretty.
Ulduar for sure!
Ulduar no question about it...
My favourite instance is Shadowfang Keep.