The Isengard Fortress serves as the essential builing for the Isengard faction . It produces builders, upgrades, and Isengard's heroes, which include the fallen wizard, Saruman, and the Uruk-hai captain Lurtz.
- Murder of Crows
- Burning Forges
- Orcfire Munitions
- Iron Plating
- Wizard's Tower, which requires Iron Plating