Towering above Lake Zurich, the historic The Dolder Grand has been reinvented to form a luxury-class city resort. The scheme integrates a substantial new extension, more than doubling the hotel accommodation and reconnecting it to the surrounding forest and resort. Remarkably, although it provides double the floor space, the new building consumes half the energy of the old – or 75 per cent less energy per square metre. The Dolderbahn cog railway station has been reinstated, enabling the local community to enjoy the site while experiencing something of the building itself.
The scheme restores the logic of the original hotel, designed in 1899 by Jacques Gros, and the external fabric has been restored and rendered in the original red and ochre palette. Internally, the planning has been transformed. The most significant moves have been to create a linked suite of grand public rooms, including a new ballroom, and to reinstate the grand southern entrance so that arriving guests now enjoy breathtaking views across Zurich and the Alps. Two new wings frame the historic Dolder, complementing the addition of a spa and a new ballroom.
The new wings are fully glazed; and stencil-cut aluminium screens line the facades to form balustrades and provide shading, their tree pattern resonating with the surrounding forest. While the geometry of the new elements is fluid and organic, the colour palette echoes that of the existing building to harmonise the overall composition. A highlight of the hotel is the new 4,000-square-metre spa. The winding stone walls that begin in the landscape continue inside to frame a canyon-like space for the pool. In some areas the walls are perforated to allow sunlight to filter in, and provide a dynamic play of light and shadow while maintaining absolute privacy. Geothermal heat pumps beneath the spa contribute to the efficient energy strategy. This is further enhanced by a high-performance envelope comprising insulated triple-glazing and natural shading.
70 Geothermal heat pumps,150 metres beneath the spa contribute to the efficient energy strategy.
High performance insulation, triple-glazing and shading.
75 per cent less energy consumption per square metre than the previous building – despite accommodating the double amount of floor space.
Energy saving approx. 1 million kwh/a per year – 25% less energy than previous building.
Werner Sobek Ingenieure GmbH & Co, Höhler & Partner, Schmidt Reuter & Partner, Vetsch Nipkow, Interbrand Zintzmeyer & Lux, Itten + Brechbuhl AG, Zurich, Schmidt Reuter, SPAd Inc. Sylvia Sepielli, United Designers, London