Considering the Beijing Jingguang New World Hotel in Beijing?
A VT member wrote the following comment about visiting Beijing:
Tian Tan (Temple of Heaven) by sunnywong
Aside from exquisitely laid out architectures, the temple is also famous for two structures with peculiar acoustic features, i.e. the Echo Wall and the Triple-Sound Stone. A mere whisper at any point close to the wall can be heard clearly on the other side, although the parties may be 40 or 50 meters apart. This is possible because the wall is round and hermetically constructed with smooth, solid bricks.