With the Hitachi Columbus Campus, a future-oriented office quarter is to be created at the city entrance of Mannheim. The building ensemble shapes the city's edge with an urban gesture that offers surprising views on the inside. Public spaces and working environments connect with each other. The boundaries between inside and outside are fluid and are designed with a focus on high flexibility and diversity, offering a variety of places to linger. A special feature: a solar roof spanning the entire complex provides 100 percent of the campus' electricity needs with photovoltaic panels.