This photo and the following two structures were taken from the nearby highway overpass. No time to really explore the Olympic Park area. Just a brief stop along the way to capture these photos.
The Observation Tower with five circular roofs are meant to evoke the Olympic rings; although it has also been described as “a huge nail”. It is the sixth tallest observation tower in China and the 22nd highest in the world. Visitors can look out over the park and the entire city of Beijing from all five platforms, ranging from 186 to 243 metres (610 to 797 ft) in height.