There are few towering structures more recognizable than the two towers featured in the Lord of the Rings novel of the same name. The obsidian-colored sharp-cornered Orthanc has more in common with its dark counterpart in the book, Barad-dur than it does with any of the man or Dwarf made structures of Middle-Earth, namely a lot of sharp pointy bits. Even in this microscale model by Jesse van den Oetelaar the tower at the center of Isengard looks quite ominous. One of my favorite details is the angled bars made by wedging the lever part in between grille plates. The round base was constructed with black clamps attached to flexible tubing, and it is a simple yet effective technique.