For many years, the La Défense business district on the edge of Paris was the beating heart of France's corporate and financial sectors. La Défense emerged in the late 1960s as a modernist hub of skyscrapers and commercial infrastructure, with hundreds of thousands of people working there every day. But when the Covid-19 pandemic hit, many of those employees began to work remotely. The neighbourhood has since struggled to attract the pre-Covid crowds, and local business are suffering as a result. FRANCE 24's Natacha Vesnitch, George Yazbeck and Siobhán Silke report.