Sala Baker in The Lord of the Rings: The Return of the King (2003)
BARAD-DUR - fortress-home of the Dark Lord Sauron, built near the volcanic Mount Doom, in Mordor
This is a sequel to Landmarks of Middle-earth, Part 1 poll. All of these entries didn't have available images on IMDb when Part 1 was made, that's why the polls are separate.