The Orc Tree

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FROM THE BOOK

Isengard (Iron Enclosure): A Gondorian fortification at the southern end of the Misty Mountains, at the source of the River Isen. It was granted to the Wizard Saruman by Steward Beren of Gondor, and destroyed by the Ents during the War of the Ring, though its central tower of Orthanc remained standing.

Based at Harcourt Park, near Upper Hutt, along with the Isengard Gardens locations. I didn’t visit this location.