Willis Tower หรือชื่อเดิมคือ Sears

formerly known as sears tower willis tower located in Chicago is the tallest building in America. With altitude one,.353 ฟุต มีการวางศิลาฤกษ์ของอาคาร 110 ชั้น แห่งนี้ ใน เดือนสิงหาคม ปี 1970 และสร้างเสร็จในปี 1973 ความพิเศษอยู่ที่ ชั้น 103 มีจุดชมวิวยื่นออกจากตัวตึก Chicago visitors can see vividly.

Willis Tower formerly Sears Tower is located in Chicago, is the highest building in America, with a height of 1,353 feet are laying of the 110-story towers in August 1970 and was in the year 1973 is 103 class viewpoint filed out of the building, tourists overlook Chicago.

Willis Tower Sears Tower or Previous Name is located in the city of Chicago is a block in America with most high-level, high-1,353 feet is the laying of the foundation stone of the building 110. This is in August of 1970 and was finished in the year 1973, on the second floor 103 special view point out from the building, visitors saw Chicago's League.