Killesberg Tower

[1] Originally planned for the 1993 World Horticultural Exposition, an interruption in the design process delayed its erection until 8 years later in 2001.

In 1985 the City of Stuttgart received the contract for the 1993 World Horticultural Exposition (Internationale Gartenbauausstellung, IGA).

In order to offer visitors an overview over a major part of the grounds, an artificial elevation was necessary.

The ambitious objective was to prove that modern construction engineering can be environmentally friendly, even when the tower is high and features several large observation decks.

The net is tensioned between a circular concrete foundation and a pressure ring at an altitude of 33.5 meters which in turn is suspended from the mast head by cables.

The four observation decks at 8, 16, 24, and 31 meters are hinged to the mast and at their circumference connected to the net by press fittings.

Due to their relative high strength they are less susceptible to press forces exerted by the fittings, e.g. for the observation decks.