We who played amazing MMORPGs always have some cities, dungeons or hunting grounds in them that we loved the most, may it be its aesthetics, its NPCs, its lore or maybe the good moments we had in them that make them remarkable.
ITT: I would like people to share those places they liked the most.
I will start with Hellbound Island from Lineage 2.
I really love all the aspects of this place, its aesthetics, its NPCs and its lore perfectly fits each other.
And its name was pretty fitting, it was pretty much hell on earth, hundreds of players grinding, Clans/alliances fighting over main spots/bosses and doing hidden quests and objectives to unlock the 11 Stages of the big Hellbound island which took months to reach the final stage and for a alliance to kill its final boss Beleth for the first time.

Steel Citadel

Enchanted Megaliths

Hellbound island map

Beleth