Tallest proposed bulidings art, awesomeness, drawings, history, Hmm..., reshaping the world, science Add comments Oct 292015 This is pretty spiffy. See HERE for the full-rez version. becida 10k’ plus tall buildings! That tallest one is skirting the need for supplemental oxygen if you were flying… http://www.aopa.org/Pilot-Resources/PIC-archive/Pilot-and-Passenger-Physiology/Oxygen-Use-in-Aviation Wow! sferrin Forget the height. Consider the volume of building materials required to build some of those. publiusr The Al Jaber tower has the best profile.