The Taiwan Tower is one of the competition entries for Taiwan's observation tower. Unusual, impossible and out of place are good words to describe this proposed project.
Designed by Vienna-based architect Steven Ma who got help from San Liu, Xinyu Wan and Emre Icdem, those two towers are proposed to reach the height of 350m (1148ft). I'm not really sure how they imagined to reach this height with such a slim structures. Observation deck and sky park supposed to be on top of them. This concept got our attention though. It's an interesting proposal, although it's impossible to happen with current technologies.
You can read more about Steven's proposals and concepts here.