从103层阳台向下看

http://img001.photo.21cn.com/photos/album/20090703/o/FFBAB4F83F00CF9A26E308BE6BEECB9E.jpg

　　这个透明的玻璃阳台位于美国芝加哥的西尔斯大厦第103层。设计者说，这个看起来有点恐怖的玻璃平台是故意设计的，为了能使游客感到他们是浮在城市上空。这对于那些恐高的人来说确实具有挑战，它会让一些人心脏停止跳动。

http://img001.photo.21cn.com/photos/album/20090703/o/034DDE8E8ED2DFAAC038461F615E702D.jpg

http://img001.photo.21cn.com/photos/album/20090703/o/6D7804B4620B068D5DDEF2D68FB54EB1.jpg

http://img001.photo.21cn.com/photos/album/20090703/o/61C1A99710894C41AA71F1191184B686.jpg

http://img001.photo.21cn.com/photos/album/20090703/o/0B9364CE3F543E2C49F5881EABE6B084.jpg

http://img001.photo.21cn.com/photos/album/20090703/o/80CC2386907104C72ADBD942EA4733CF.jpg

http://img001.photo.21cn.com/photos/album/20090703/o/F50D6DBD51F30BCE457A7E2C3B177DE7.jpg

http://img001.photo.21cn.com/photos/album/20090703/o/EEB0062B7ACDAC5CDBD1FF65C32799A8.jpg