The result of a close collaboration with EPAD, the City of Courbevoie, Atelier de Paysage Urbain and Département de Hauts-de-Seine, the project is intended to inject life into the area east of La Défense by creating a sustainable, high-density community.

Due to start on site in 2010 and complete by the end of 2014, the two 323m towers accommodate a hotel, spa, panoramic apartments, offices and serviced apartments, as well as shops at the base.

Forming two interlocking triangles on plan, the buildings face one another at ground level. Open and permeable to encourage people to walk through the site, the towers enclose a public piazza which establishes the social focus. As they rise, the towers transform, turning outward to address views across Paris.

The glazed façade panels catch the light, the sun animating different facets of the buildings as it changes direction throughout the day. The angle of the panels promotes self-shading and vents can be opened to draw fresh air inside, contributing to an environmental strategy that targets a BREEAM ‘excellent’ rating. The diagrid structure is not only highly efficient - doing more with less - but it emphasises the elegant proportions of the towers.

Norman Foster said: “Hermitage Plaza will create a 24-hour community that will regenerate the riverfront and inject new life into a predominantly commercial part of the city. A light catching addition to the Paris skyline, the development will also provide a public piazza that leads down to the river’s edge to create a new destination for the city.”

The design was unveiled at MIPIM.