Dutch designers UNStudio and German practice HPP Architects have joined forces to deliver four skyscrapers and a new urban quarter in the heart of Frankfurt. In 2015, development firm Groß & Partner acquired a 16,000sq m (172,200sq ft) plot on Junghofstraße, which had been inaccessible for nearly half a century. UNStudio won the architecture competition for the project, called FOUR Frankfurt, the following year. HPP have now been added to

German architect Ole Scheeren, best-known as the designer of a series sculptural towers in Asia, has announced his first project to be built in Europe: a spectacular residential high-rise in the city of Frankfurt. Riverpark Tower, commissioned by developer GEG German Estate Group, will emerge through the conversion of a forty-year-old concrete office building. Büro Ole Scheeren, the architect’s eponymous practice, will cut some floors and insert new, larger horizontal