Sigrid Ehrmann is a Barcelona-based freelance landscape architect and writer, previously working in Australia and Germany. Her blog: lapinyabarcelona.com.
The 2018 Smart City Expo World Congress offered a chance to reflect on the opportunities and challenges that come with the increasing digitalization of city infrastructure, from increased energy efficiency and urban mobility to issues of data protection and privacy.
A rooftop garden by Bent Architecture provides a welcoming retreat from the hustle and bustle of Melbourne city life below.