Airports, especially those in big cities, expose an architect’s work to millions of people every year and are highly sought-after assignments. New projects are awarded through competitions that can span years; once granted, they may take decades to be fully completed.

The latest airport award to be given will be happening in London. The British capital is facing an aviation crisis and mayor Boris Johnson has called on Zaha Hadid, winner of the 2004 Pritzker Prize, to help solve it.

The final determination, however, is still being made, and the award won’t be granted until 2015. Meanwhile, here are eight other world-class airport projects, underway now, that will help push the field of airport architecture to new heights.

Photo Credit: Zaha Hadid's design for the expansion of the Zagreb AIrport in Croatia. Zaha Hadid