Steelhyl was an ancient city of smiths in Castanor and a highlordship during the days of Castellyr, where the greatest human and dwarven smiths, miners and metallurgists congregated to perfect their crafts.
After the War of the Sorcerer-King, Steelhyl was one of the many feudal lands that lacked a clear heir so was instead given to the House of Vanbury, who were a famous noble house of metallurgists from Gawed. Steelhyl was one of the first provinces to be hit by the Greentide, during which the foundries of the province were laid to ruin.
The city is known for its legend of the Angel of Steelhyl, a mythical figure who taught the people of the land how to make steel originally before the Castanites came.