The pandemic-related access regulations and closures affect user behaviour and the operation of stadia and arenas. What new technologies and socio-economic approaches are emerging for future operations? What changes will stadia and arenas have to face in the medium and long term? What does this mean for facility design? The IAKS expert circle „Stadia and Arenas“ has investigated these issues. They analyse which infrastructural tasks stadia perform in the urban context, call for their expansion to include mobility hubs, open spaces and spatial design, see potential in air-quality and hygiene standards, and point out the opportunities for collecting and using data. Inspiration from Australia, Europe, South Africa, and North and South America.