Blackbarn was located on the southern bank of the River Scelptar, just north of The Land of Two Princes. The streets were paved with cobbles and most buildings were made of brown stone, with maroon-tiled roofs.
Despite its name, there was no barn within the town. "Wagonhouses" were used instead to store produce for trade. These warehouses were designed so that a wagon could be filled via chutes located along the bottoms of the buildings. 
Blackbarn was governed by a council of local merchant lords called the Trantors. They elected a High Trantor from their numbers who acted as head of state.
Blackbarn was a prosperous town and was home to many merchants. These merchants would travel the Border Kingdoms in caravans or river barges towards ports along the Shining Sea for export to Calimshan and beyond.
The town was a peaceful and safe place to live thanks to the presence of the Ghost Lances, also know as the "Black Knights". They were the ghosts of knights exiled from Tethyr centuries ago, who resided in a crypt under Blackbarn, cursed by a powerful wizard named Kulaskular. 
The Lances hunted thieves and brigands, leaving the law-abiding locals in peace. They appeared in small groups whenever criminal action occurred in the town, from kicking a dog to murder, or when the town was under threat from outside forces. They usually appeared in groups of three to a dozen. The spectral knights never spoke but were elegant in their gestures and could write messages in many languages. 
The town was founded when exiled female mercenaries of the Silent Knife from Calimshan settled the area. The town's name derived from one of the early large structures, a large black barn built with duskwood.
- Althalas, a local sage who resides on Barwinter Street. Originally from Tethyr. 
- Thurbald, another loca sage who resides on Crowns Street. Originally from Calimshan. 
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Ed Greenwood (2006-03-22). The Border Kingdoms: Blackbarn. The Border Kingdoms. Wizards of the Coast. Archived from the original on 2016-11-01. Retrieved on 2017-03-28.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Ed Greenwood (February 1996). “Elminster's Everwinking Eye: The Border Kingdoms: Blackbarn and Bloutar”. In Duane Maxwell ed. Polyhedron #116 (TSR, Inc.), p. 9–11.
Adaerglast • Bedorn • Barony of Blacksaddle • Burntbridges • High Emmerock • Barony of Great Oak • Hawkgarth • Land of Two Princes • Nether Mukshar • Middle Mukshar • High Mukshar • Ondeeme • Owlhold • Realm of the Mount • Realm of the Ready Sword • Shandolphyn's Reach • Grand Duchy of Shantal • Realm of the Smoking Star • Suldamma • Swordpoint Streams • Talduth Vale • Thuntar