高所恐怖症でなくてもこわいわいw

シカゴのThe owners of the Sears Tower.
103階（412m）に、上下左右ガラス張りのバルコニーが！　これは恐いw

via (http://izismile.com/2009/07/06/the_balconies_of_the_sears_tower_in_chicago_-_not_for_people_who_have_vertigo_22_pics.html)