Rock of Bral
Bral is a large city built on an asteroid that orbits the DM's world in Wildspace (or is located in the Astral Sea, if one prefers)
Population: 12,500; another 500 transient citizens who spend part of their time traveling to other Spelljammer ports or across the planar boundary into the Astral Sea. Bral must balance its population against its limited oxygen supply. (If located on the Astra Sea, this isn't as much of a concern.)
Government: Prince Andru (male human Lvl6 [evil]) controls Bral and that control is absolute. He isn't so much a tyrant as an unscrupulous diplomat that is both charming and devious. He is obsessed with the power that ruling Bral allows him. His paramour, Lady Cerena (female human Lvl1 [unaligned]), has his ear and his heart but prefers to avoid the machinations of the prince's court.
The court is dominated by several politically savvy characters including the untrustworthy Lord Diadan Cartan (male human Lvl24 [chaotic evil]); Proconsul Gadaric Main (male human Lvl25 [unaligned]), Andru's chief advisor; Mahaxara Khal (female human Lvl19 [unaligned]), Captain of the Royal Guard; Mardan Rhom (male human Lvl22 [evil]), the prince's spymaster; Tiendor Allan (male half-elf Lvl15 [good]), the prince's friend and advisor.
The prince must also deal with the agendas of The Noble Council and The Council of Captains as well as the envoys and emissaries of the various power groups of Wildspace.
Defense: Bral's military defenses are substantial. Its army is composed of three key parts -- the Royal Guard (five companies of 60 elite soldiers in each), the Regulars (four battalions of five companies each), and a militia that can field all of Bral's able bodies souls who volunteer for duty. Bral also has a Royal Navy of 20 spelljammers and 600 souls. The city is also protected by numerous fortifications including the palace, the Donjon, the Underside Citadel, and a system of ballista towers.
Inns: The Middle City -- The Raised Cup and The White Galleon; The Low City -- The Rampant Lion.
Taverns: The Middle City -- The Edge, The Golden Helm, The Red Bull, and the taproom of The Raised Cup; The Low City -- The Crooked Square, The Laughing Beholder, The Rockrat, The Sign of the Black Bull, and the taproom of The Rampant Lion.
Supplies: The Middle City -- Balic's Blades, Barduk's Smithy, Dredar's Mail and Arms, Elmandar's Starcharts, Fine Armors of Bral, Frada's Provisioning (ship supplies), Gaspar's Reclamations (magic), Morweg's Arms and Armor, The Bralian Mercer (fine clothing), Town Apothecary, Yarnak's Dwarven Arms, and the Great Market; The Low City -- Cap'n Gyudd's Nautical Goods, Houwe's Ballistae and Catapults, Krunz Kanonwerks (gunsmith), Marshall's Smithy, Nautical Charts of Bral, Royal Sailmakers of Bral, Saakharr's Exotic Mails, Zada's Mounts and Harness, and the Lesser Market.
Temples: The Middle City -- House of the Path and the Way, Pantheist Temple of Tyr, Pantheistic College of Celestian, The Planar Church of Celestia, The Planar Church of Ysgard, Polyglot Shrines, and the Temple of Ptah; The Low City -- Holy Keep of Bane, House of Tempus, Keep of Gond, and the Temple of Odin.