06/03/2024
In 1992 Foster + Partners was one of fourteen non-German firms invited to participate in a design competition for rehabilitating the Reichstag building, along with 80 German architects. Foster knew this was an invitation he could not refuse, but was also skeptical that a non-German architect could win the competition. In the end, the three finalists in the competition were all non-Germans: Foster, Santiago Calatrava, and Pi de Bruijn. Foster’s original competition design called for a steel and glass canopy covering the original structure, and stretching north to connect with the Spree River. As Deyan Sudjic described, “Resembling a giant table sitting on top of the parliament, it would have entirely transformed its meaning, rendering the project a memorial to the past, while at the same time demonstrating that the new parliament building signified a departure from history.
Foster’s winning design did not include a dome, but almost immediately after the competition was concluded, some members of parliament (MPs) began demanding a reconstruction of the original dome. As Sudjic recounts: Although he initially refused to consider adding a dome, a separate proposal from a German architect to add a reconstruction of the historic dome threatened Foster's vision for the building's interior spaces, and he began exploring ideas for what he came to call the “cupola.”And it was not just the dome that was subject to the whims of the politicians. Then-Chancellor Helmut Kohl insisted on a brighter color scheme for the interiors than the neutral palette of whites and greys that Foster had originally proposed–even the sculpture of the eagle in the parliamentary chamber was the subject of considerable debate. In fact, it is that contentious dome–or cupola–that most fully captures Foster’s ideals for the project. The cupola is the most publicly accessible portion of the building; it provides a visual connection to the work in the parliamentary chamber below, it is a functional component of the building’s sustainability strategy, and, despite Foster’s initial hesitation, it serves as a reference to the history of the building. The cupola is also the most obvious demonstration of Foster’s intervention in the historic building. Although it is a nod to the building’s history, the form is entirely new. Clad in clear glass, the helical ramp along the outer edges of the space helps define the dome-shaped volume, and leads to an observation deck that provides a vantage point for visitors to look out on the surrounding Berlin cityscape. At the same time, skylights at the base of the cupola open into the debating chamber below, providing a visual connection to the government at work. An inverted cone of mirrored panels in the center of the dome reflects daylight down into the debating chamber, and also supports ventilation in the building, exhausting hot air through the top of the cupola.