Bazzoxan.

Large, black, metal walls surround the military outpost that is Bazzoxan (BAZZ-oh-zan). The streets of the city rise sharply from the entrance gates, seemingly leading up into the sky itself. But lording over the city, visible from any angle, is the largest building you've ever seen. An enormous cathedral whose spires rise high enough that you're nearly looking straight up to see the tops. Ever-darkening clouds swirl around its towers, trapped in their orbit.
The front gate opens slightly and a squad of four highly armored and armed Aurora Watch soldiers files out, then another soldier steps in front of them. Above them on the wall, countless longbows and crossbows are trained on you in anticipation. The leading soldier holds one hand up to command the crossbows, and another out to you all to stop your approach. The man, blessed with both the cunning of drow ancestry and the power of orchish lineage, spends a few seconds looking over you all with a keen eye. Judging all kinds of things: wealth, strength, magical ability, motive, etc. He speaks out to you in a deep, grave, authoritative voice.
"Halt. State you're business in Bazzoxan, travelers." They wait expectantly for an answer.