如何用最輕的動作，在充滿生機的茂密森林裡建造一座遊客中心？
遊客中心是位於花博園區內部與外部之間的過渡型空間，群眾進入展區後，即將進入各種實心的建築量體和大花園，實心建築量體將自然隔離在外；大花園缺乏遮蔽、無法提供舒適的環境讓群眾接觸自然，兩者皆分離了自然與人類的關係。我們思考遊客中心作為園區內外的中介空間，面臨大量從都市湧入到自然的遊客，如何成為一個舒緩群眾身心的沉澱池，讓群眾在這裡放慢腳步、親近周圍樹群。
我們先畫出一個直徑八十四公尺的正圓形，將圓形六十等分，圓形的輪廓連結基地內大部分的樹，保留基地範圍內大部分的綠地，同時移除牆壁，展露出樑柱系統，被保留的樹也得以穿越樑柱生長，宛如涼亭般的輕量化設計打破建築的室內外之分。屋頂的披覆材料使用了溫室常見的PC板，讓視野可以穿透溫室並看見樹林的綠意。整體結構系統使用白色的鍍鋅方管，每根柱子斷面尺寸為12.5公分見方，企圖以密集的柱系統與森林中的樹木產生視覺上的呼應與融合。
周圍樹群平均高度為十二公尺，我們在圓形基地中央定義出大片的草原廣場，將屋頂從高度2.8公尺的人體尺度、放射狀向外漸進地提高到九公尺高，形成一條圓弧曲線，連結中央草原與周圍樹群，同時隱性的界定出領域的內與外。外側以反向的漸變圓弧曲線屋頂、從入口廣場包覆至後方，延伸半戶外空間的活動，讓自然成為空間中的景，連結人群與自然的關係，以自然為主體，建築物成為襯托自然及群眾的背景。
How to use the lightest action to build a greenhouse in a dense forest full of vitality?
The visitor center is a transition between the interior and exterior of the Garden Exposition. Within the Exposition ground there are various pavilions and large gardens. The pavilions isolate nature from the outside. The large garden lacks shade, unable to provide a comfortable environment for people to get in touch with nature. Both the pavilions and gardens become barriers between nature and humanity. We envision the visitor center as an intermediary space inside and outside of the park. Given the large influx of tourists from the cities to the natural park ground, the visitor center should act as a filtration tank. It should soothe the body and mind of the visitors, allowing them to slow down and get close to the surrounding trees.
We started by drawing a perfect circle with a diameter of 84 meters. Dividing the circle into 60 equal parts, the circular outline connects most of the trees and retains most of the green space within our site. Walls were removed exposing the beam-column system allowing the preserved trees to grow through the beams and columns. A light structural design resembling an outdoor pavilion connects the indoor spaces with the outdoor. PC boards are used as roofing material commonly used in greenhouses allowing visual extension from the interior to the greenery of the woods. The structural system consists of 12.5cm square white galvanized pipes. An attempt is made to visually integrate the trees in the forest with a dense structural column system.
The average height of the surrounding trees is 12 meters. We defined a large square exterior grass lawn in the center of the circular site. The roof height surrounding the lawn is 2.8 meters with an emphasis of human scale. The roof gradually rises radially outward to a height of 9 meters, forming a circular arc which connects the lawn with the surrounding trees. The roof implicitly defines the inside and outside of the lawn. On the outside, it is curved with a reverse gradient arc. Wrapped from the entrance plaza to the rear it allows nature to become a feature of the space connecting people and nature. Our building becomes a backdrop between people and nature.