On March 22, 2020, Zagreb was struck by a destructive earthquake which greatly affected the city's historic centre. Mainly developed during the 19th century, the historic quarter of Zagreb consists of big blocks with magnificent facades, inside of which a network of poorly maintained and under-used courtyards and buildings calmly sit, awaiting for a better future. The project Terra Ignota is a protocol aimed at re-densifying Zagreb through innovative material practices, in a city that sits atop extensive clay deposits and remains swamped with rubble.