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.
Must-see in Chicago Of all the landmarks, the Willis Tower (formerly the Sears Tower) is a must for any visitor to the city. Another must-see is the Museum Campus, which includes the Field Museum, Shedd Aquarium and Adler Planetarium. Finish off with a walk in Grant Park, with views of Lake Michigan to the east and the downtown skyscrapers to the west. Being one of the largest cities in the USA, Chicago has plenty of lodging options. For families, the best options are in the north side of the city, which is in close proximity to downtown.