11 Diagonal Street

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11 Diagonal Street
11 Diagonal Building.jpg
A view of the building from street level
General information
TypeMulti use, Office
LocationJohannesburg, South Africa
Coordinates26°12′15″S 28°2′9″E / 26.20417°S 28.03583°E / -26.20417; 28.03583Coordinates: 26°12′15″S 28°2′9″E / 26.20417°S 28.03583°E / -26.20417; 28.03583
Construction started1978
CostR56 million
OwnerRedefine Properties Limited
Antenna spire80 m (260 ft)
Roof75 m (246 ft)
Top floor75 m (246 ft)
Technical details
Floor count20
Floor area1,200 m2 (13,000 sq ft)
Design and construction
ArchitectHelmut Jahn

11 Diagonal Street is a skyscraper in Johannesburg, South Africa. It was built in 1984 to a height of 80 metres. It is designed to look like a diamond as it reflects different views of the Central Business District from each angle of the building.[1]

The building's architect was Helmut Jahn.

Current Use[edit]

The building is currently used by the department of Development Planning & Local Government.[2]