RANK #25Chicago · United States

Willis Tower

윌리스 타워 (구 시어스 타워)

442.1 m

World’s tallest 1973–1998. Switch to ‘tip’ and it leaps past Petronas.

Elevation — common ground lineSame scale · metres

554.5

150

300

450

442.1 m

Willis Tower

554.5 m

Lotte World Tower

A · Architectural

442.1 m

B · Occupied

412.7 m

C · Tip

527 m

Schedule

Completed1974

Floors108

ArchitectSOM (Bruce Graham, Fazlur Rahman Khan)

UseOffice · Observation

ObservatoryYes

HotelNo

Skydeck on floor 103, including The Ledge glass boxes.

0.80× Lotte World Tower

1.9 N Seoul Towers stacked

1.8 × 63 Building

DATUM · LOTTE 554.5 m