The tower was officially open in 2015, seven years after the 2008 Beijing Olympic Game! It has a beautiful and unique design. Of course some call it "Big Nails" due to it's design :-) Its design echoes the shape of the Olympic Rings. From the top of the tower, you can have the best view of the Olympic Park, which includes the National Stadium, Water Cube, National Convention Center, etc. Also, in a clear day, you can have an overview of Beijing City, one of the most grand/beautiful capital cities in the world!