Sparkasse Hagen Tower

It was replaced by a lower building complex, called Sparkassen-Karree Hagen,[11] which was inaugurated in 2006.

The front consisted of a pre-hung aluminum construction with a surface of 10,300 m2 (111,000 sq ft).

Repairs would have required further measures, including improvements to the air conditioning system and installation of a second stairway for fire safety reasons.

1,450 explosive charges weighing 250 kilograms were used in timed sequence to cause 26,000 tons concrete and steel to first fold and then collapse into a predetermined 70 m (230 ft) bed without damaging neighboring structures.

The successful breakup is considered as master achievement of the specialty firm from Thuringia and receives an entry in the Guinness World Records.