Christoph and Donata Valentien founded the office Valentien+Valentien Landscape Architects in Stuttgart in 1971. Due to the appointment of Christoph Valentien as professor at the University Munich to the chair of Landscape Architecture and Design in 1980, the office has been moved to We├čling/Bavaria two years after. Since then, key activities have been consulting and planning for landscape architecture and urban development in Germany and other countries, ecological and urban surveys, as well as design and construction planning.