Arup and David Chipperfield Architects have begun the joint design process for a new arena in the south-east of Milan for CTS Eventim. After its completion in 2025, the arena will cater for sports and cultural events with up to 16,000 spectators and will initially serve as a venue for the Winter Olympic Games in early 2026. The arena is at the heart of a new urban district, currently under redevelopment in the south-east of Milan, which encompasses residential buildings, buildings for education, commerce and leisure as well as an extensive park. The wide outdoor areas outside the arena, including a spacious piazza of over 10,000 square metres, will provide a new opportunity for social interactions for people from the neighbourhood and the city.The arena’s elliptical design is inspired by the form of a classical amphitheatres, but reinterpreted using modern materials. Three irregularly-shaped aluminium rings separated by glass bands will adorn the façade, and at night LED strips will display large-scale media events.The stadium will be part of Milano Santa Giulia, a new district in the southeast of the city masterplanned by Foster + Partners. As well as the sports facilities, it will contain residential buildings, schools, a park and shops.After the Olympics are over, the Santa Giulia arena will host concerts, sports events and festivals, as will the 10,000 sq m piazza that surrounds it.