Saint-Gobain Gyproc, ISOVER, Weber and Ecophon have joined forces with window manufacturer Velux, GxN architects, software publisher Autodesk and the Realdania investment fund to develop the Green Solution House. The construction of this hotel and conference center, located in a wooded setting in Rønne (Denmark), is based on sustainable development concepts. It was built using recycled and innovative construction materials. The Crown Prince of Denmark, Frederik André Henrik Christian, officially opened the center in the presence of Thierry Lambert, General Delegate for Saint-Gobain and Regional Director General for the Construction Products Sector for the Nordic countries and Baltic states.