蒲江位于成都西南部，为向本地居民提供更高质量和可持续的生活方式，蒲江新城正在持续开发建设中，改造长秋山上现有的简易观景点是新城建设的一部分，人们可以在此俯瞰新城的发展全貌和邛崃山脉的全景，收获更好的体验。MVRDV 受当地政府之邀，对这一观景点进行升级改造，将其打造成为一个吸引游客的目的地，同时能够举办从婚礼到集会演出等各种类型的公共活动。

The new town of Pujiang is currently under development to the southwest of Chengdu, with the intention of providing its residents a high-quality, sustainable lifestyle. In the hills to the east of Pujiang, a simple existing viewpoint offered commanding views over the growing town and the panorama of the Qionglai Mountain range behind it. MVRDV was commissioned by Pujiang County Planning and Resources Bureau to upgrade this viewpoint, turning it into a desirable destination for tourists, as well as an event space capable of hosting everything from weddings to government meetings.

在设计之初，MVRDV 发现，最早的观景台在建造期间，原有的山丘顶部被夷为平地。设计通过构筑一个与地貌融为一体的覆土拱形结构，呼应了曾经存在的山丘形态。MVRDV 还优化了路网，增加了多条通往观景台的路线，其中增设了一个附带螺旋楼梯结构的次级观景平台。「长秋月观景台」本身采用更具可持续性的木结构建造，意在进一步启发和推广木结构在建筑建造业的普及。

MVRDV’s design started from the revelation that the hill was flattened during the construction of the pre-existing viewing platform. By creating an arched pavilion covered with an earth berm that blends into the landscape, the design creates an echo of the hill that existed before. The design also improves the path network to add multiple routes to the viewpoint, including by adding a secondary viewing platform incorporated into a twisting staircase structure. The pavilion itself is made using a timber structure, serving as a demonstration to encourage greater adoption of wood in the Chinese construction industry; despite the benefits of wood in reducing the carbon emissions, Chinese regulations and industry at large remain hesitant to adopt the material at scale.

参观者通过观景台东南侧嵌入崖径的小型玻璃入口进入室内。内部空间的屋顶向上倾斜，而地面则以阶梯形式向下倾斜，顺应山体的坡度。阶梯本身形成一座看台，适合观看表演和分享活动；或是仅仅让人们坐下休息，透过另一端10米高的玻璃开窗，欣赏窗外无际的景色。玻璃窗设置了大型的滑动门，将室内空间延伸至室外观景阳台，最大限度地连通室内外的视野和功能。

The pavilion is entered via a small glass façade set into the earth berm on the building’s south-east side. Inside, the roof slopes upwards as the floor slopes downward, conforming to the slope of the hill. This slope forms a tribune that is ideal for presentations, or simply for sitting to take in the landscape through the 10-metre-tall glass façade at the other end. This façade incorporates a pair of oversized sliding doors that open the interior to the viewing balcony outside, maximising the connection between inside and out and allowing the balcony to serve as an extension of the indoor space when required.

“The hills of this region are truly a spectacular sight, so one of the challenges we faced was to make the most of those views while reducing the impact on the landscape”, says MVRDV founding partner Jacob van Rijs. “By adding a hill-shaped pavilion with a green roof we not only minimise our own impact, but we recreated the hill that was there before. This act of preserving and respecting nature is the essence of the design, which is continued in the construction approach, using bio-based materials such as wood that are more sustainable and thus have less impact on natural environments such as this one.”

The design incorporates the pathways that already existed on the site, adding a staircase to connect them into a loop. Atop the staircase is the circular secondary viewing platform, offering 360-degree views of both the distant mountains as well as the nearby natural environment.