Willis Tower

Sears Tower
Built
442.1 m | ft 1,450

Height of building

527 m | ft 1,729

Height to tip

412.7 m | ft 1,354

Highest occupied floor

14

World ranking

2

Ranking in country

1

Ranking in city

Facts

Address

233 South Wacker Drive
Chicago, United States

Construction period

1970 - 1974Built

Use of the building

Offices
Observation deck: Skydeck 99f, 103f (413 m)
Conference rooms
Parking
Communication

Structural material

Concrete / Steel / Glass

Other

Floors: 110
Floors below ground: 3
Elevators: 104
Floor area: 418,064 m²
Owner: Blackstone Group
Architect: Skidmore, Owings & Merrill
Official website: willistower.com