The siting of bosque of yaupon trees ( ilex vomitoria ) immediately outside the main entrance , and preventing full view of the building from a distance , is the first sign that the threshold is not a space merely to pass through 冬青树阵的种植紧接著主要入口的外侧,在远处即遮挡了建物的全貌,这是第一个暗示:阈不仅仅是一个通道。