Isengard

Isengard, the fortified valley and industrial stronghold under Saruman's command, undergoes a dramatic transformation across The Lord of the Rings, evolving from a polluted war machine to a verdant paradise. In The Two Towers, it serves as the epicenter of Saruman's orc-breeding operations and aggressive war efforts against Rohan, culminating in its devastating sack by the Ents. By The Return of the King, the Ents have reshaped it into the lush Treegarth of Orthanc, a garden of orchards, streams, and sentinel trees encircling the impregnable Tower of Orthanc rising from a central lake.