The Derinkuyu underground city is a sort of gargantuan anthill, except made by and for humans—up to 20,000 of them at a time, in fact. The city descends 280 feet into the earth, divided into ...

Concept art of one of Bhutan's new bridges. The city is designed to draw back some of Bhutan's disappearing workforce. Bjarke Ingels Group The city of Gelephu, which sits along Bhutan's southern ...

Scroll below to see all the concept art from Wicked, including early iterations of the film's famous flying monkeys and visions of Emerald City, Oz and more. If you need more inspiration read our ...