New Hotel Topazz looks to its historic location while being constructed with empathy for its surroundings and Vienna's future in mind. Surrounded by historical buildings, it is the first green upscale hotel in the city centre. Its resource-saving energy concept uses advanced technology to generate low operating cost resources. But the sustainable approach does not end there; throughout the hotel high-quality green materials have been used for building and interior design. The hotel's fa?ade is dotted with large oval windows. These are staggered at different intervals to match different heights of the neighboring houses. The interior designer was inspired by the hotel's fa?ade, which reminded him of a cylindrical vase gemmed with big oval amber stones.