The 3-sided Roofed Corridor faces XinYi Road, HangZhou S. Road, and AiGuo E. Rd. and is 5.5 meters tall. The distance between the Concert Hall pavilion and the Opera House pavilion is 748 meters. The total length of the Roofed Corridor is 1948 meters. Along the outer wall, which faces the sidewalk, Chinese style latticed windows are located every 4.5 meters, for a total of 246 windows along the outer wall. Together with those found on solitary walls inside the area there are 390 windows in a variety of 26 different motifs. Along the inner side of the wall and facing the garden, the Roofed Corridor is supported by round pillars. There are four pavilions along the wall plus those of the Concert Hall and Opera House for a total of 6. The pavilions are 11.1 meters tall and were constructed with the same materials used in the Entrance Archway.