Medical Definition of dorsiflexion. : flexion in a dorsal direction; especially : flexion of the foot in an upward directionâcompare plantar flexion.
Willis Tower. The Willis Tower, built as and still commonly referred to as Sears Tower, is a 108-story, 1,450-foot (442.1 m) skyscraper in Chicago, Illinois, United States.
Sometimes also referred as Freedom Tower, One World Trade Center is the tallest building in the Western World and Fourth in overall list. It is situated in Lower Manhattan, New York. This 104-story structure also has strong connection with Twin Towers, which were destroyed during 9/11 attacks.