Case Study: Helaba Main-Tower Frankfurt am Main, Germany The Project • Hamburg-based architects Schweger and Partners based the basic premise of the designs for the main tower on the most basic shapes – circle and square. • Since being completed in 2000, the Helaba Main-Tower has been one of the landmark sights in Frankfurt - and one of the most popular. • The 54-storey structure, modelled on the old ‘sky scraper’ tradition, has become a true symbol of Frankfurt. The Challenge • The fi rst high-rise building in Europe with a fully glazed façade. This was designed by the architects to make an important contribution to providing the offi ces with natural light and ventilation. • The 2,550 windows can be opened outwards parallel to the façade. • The building’s insulating gl

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