Three Elf-towers of immemorial age were still to be seen on the Tower Hills beyond the western marches. They shone far off in the moonlight. The tallest was furthest away, standing alone upon a green mound. The Hobbits of the Westfarthing said that one could see the Sea from the top of that tower; but no Hobbit had ever been known to climb it.
- The Fellowship of the Ring (Book 1), Prologue
The grandest of the three White Towers on the Tower Hills, Elostirion has held one of the Palantíri of Arnor for many millenia. They were built by Gil-galad as a gift to Elendil in the last Second Age.