A tower with very unusual shape in Beijing (China) will be completed for the Olympic games 2008. It's new China Central Television Tower (CCTV). It seems, that this building cannot exist in the our world, because it consists of two leaning towers, which are joined by a bridge with corner shape. The whole shape of the building seems like deformed square donut.
In 2002 two architects from Holland Rem Koolhaas and Ole Scheeren won an international competition for the CCTV tower and the project broke ground in September 2004. The project is even more complex because Beijing lies in an earthquake zone, and the tower is full of technical challenges.
Escher could like this paradoxical building of his fellow countrymen.