Isengard

Isengard, also known as "Angrenost" (Iron Fortress) in Sindarin, was a fortress of Gondor, which was then given to Saruman as his own personal realm.

There, after turning to evil purposes, Saruman has built his own army of Orcs, Uruk-Hai, Wolves, Birds, and Men, and commands them and the Palantir in his tower of Orthanc.

Residence

 * Saruman
 * Lurtz
 * Ugluk
 * Wulf
 * Shakru