Oh I remember the old days. Surprised no one mentioned Old Payon... it was a very sad day for most people when we lost the sweet and awesomely laid-out city.
I remember getting all the e-mails that something "big" was coming to Morroc as Weapon pointed out too. I remember GH graveyard used to be the place to level since the intersecting path in the centre was generally considered the 'save zone.'
I also remember Geffen dungeon used to a major leveling place for beginners before they added those evil flies to the FIRST floor. Poporings were also added to payon dungeon to interfere with levelers since @autoloot did not exist (I think).