穹顶高52米，沿长轴运行178米，沿小轴线运行157米。它是由钢和木材组合而成的，它的底层是不露的，露出了支撑穹顶的柱子，并在内部和周围创造了一种透明的感觉。就连底层的玻璃幕墙也被推到了里面，这样穹顶就会在它的掩体上方盘旋。

The dome boasts a lavish height of 52 meters running 178 meters along the major axis and 157 meters along the minor axis. It is built of a combination of steel and wood, its ground floor left uncovered to reveal the columns that carry the dome and create a sense of transparency between the interior and the surrounding. Even the glass facade on the ground floor is pushed inside so that the dome appears to hover above the space it shelters.

 © Flickr User abby.enscoe

c Flickr用户abby.enscoe

采用日本艾塔雪松木材，在该地区种植，并以现代有效的方法运输。25，000层木板被胶合在一起，并以高效的方式收割和加工，以建造穹顶。室内的焦点是在这个隐蔽的穹顶创造的空间，其中木材发挥着关键的作用，它带来的舒适和温暖，它带来美丽的拥抱空间。

Aita Japanese cedar wood was used, which is grown in the region and was transported in modern efficient methods. The 25,000 laminated wood planks are glued together and harvested and processed in an efficient manner for the construction of the dome. The focus of the interior is on the space created by this sheltering dome, in which the wood plays a crucial role, the comfort and warmth it brings along beautifully embracing by the space.

 © Flickr User wakiiii

c Flickr用户觉醒iii

此外，穹顶的形式是很好的考虑，特别注意风，就像在伊藤的风塔，虽然以完全不同的方式。屋顶的设计尽量减少了冬季季风的影响，并大大加强了通风在夏季。在照明方面，全年都保证有大量的自然光。这既减少了排放，又增强了内部空间的质量，甚至从健康的角度来看也是如此。

Moreover, the form of the dome is well thought, paying special attention to the wind as in Ito's Tower of Winds, albeit in a completely different manner. The design of the roof minimizes the impact of winter monsoons and enhances ventilation significantly during the summer. In terms of lighting, a significant amount of natural light is guaranteed throughout the year. This both cuts emissions and strengthens the quality of space inside, even health wise.

 © Mikio Kamaya

(Mikio Kamaya)

显然，圆顶被东洋伊藤(Toyo Ito)解读为一种结构，并不仅仅是为了举办一场活动，而是为欢迎大量的人，并确保他们的舒适和快乐而量身定做的空间。这座建筑不仅举办棒球和足球等体育赛事，而且还举办各种活动和表演。它接受合理数量的自然光，夏季通风，冬季避免季风，最重要的是通过透明的底层水平与周围说话，这一层微妙但令人放心地承载了上面的结构。

Clearly, the dome is interpreted by Toyo Ito not as a structure to merely host an event, but rather as a space tailored to welcome large amounts of people and assure them comfort and pleasure. The building hosts sports games including baseball and soccer, but also various events and performances. It receives a reasonable amount of natural light, ventilates in summer and averts monsoon winds in winter, and most importantly speaks to its surrounding through a transparent ground floor level that subtly but reassuringly carries the structure above it.

建筑师伊藤东洋

Architects Toyo Ito & Associates Project Year 1997 Photographs Mikio Kamaya, Flickr User wakiiii, Flickr User abby.enscoe