The history of the city of Xian, in particular its city walls is the starting point for the project.
The ubiquitous closed city wall is reconceived as an unfolded wall, turning it into a linear structure that delineates the centre of the site.
This one kilometer linear structure is made up of five green houses, each housing different climate zones.
Chang An Park sits at the centre of the linear structure while the northern tip is punctuated by a large entrance square, designed to be a flexible and open space for both horticultural exhibitions and opening ceremonies.
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