At the top of a hill,a double curved shell covers the pit to accommodate the mixed programs of paragliding and hotel,not only for meeting the technical requirements of paragliding ground,such as aerodynamic force and slope gradient,but also forming a landscape architecture to minimize environmental impacts.The shell and arches form a column-free space and it's exposed to existing rock face,which allows people to have a dialogue with nature in a cave-like space.This tactic project located in Jingyun County seeks to attract both tourists and professional paragliders to stimulate local tourism.