Eye level
On Sunday I was watching Breakfast with the Arts on A&E (by the way, the new-ish host Karina Huber is no Elliott Forrest), and one of the guests was the chairman of the architectural firm Kohn Pedersen Fox Associates. He was on the show to talk about the Shanghai World Financial Center, which when completed will be one of the tallest buildings in the world. Its main distinctive feature is a large circular opening near the top, 50 meters (164 feet) in diameter, intended to ease wind pressure on the structure.
However, all I could think was that it would be a perfect place for the Eye of Sauron.