Architecture studios HOK and CF Mller Architects have completed the overhaul of the spherical Avicii Arena in Stockholm to "ensure its relevance for decades to come".The giant steel, concrete and glass globe, which is the world's second-largest spherical building after the MSG Sphere Las Vegas, has been updated to improve its function as a contemporary multipurpose arena.HOK and CF Mller Architects carried out the overhaul of the 16,000-seat sphere in collaboration with engineering firm Schlaich Bergermann Partner (SBP) and local construction company NCC.Avicii Arena has reopened in Stockholm following a renovation. Photo by Mrten LindquistTheir goal was to celebrate the existing architecture of the heritage-protected building, which was inaugurated in 1989, while bringing it up to the standards of a modern-day venue for sports, entertainment and gaming events."This project celebrates the past while embracing the future," said HOK senior project manager Kirsty Mitchell. "Our design solutions honour the arena's iconic architecture while introducing innovative and forward-thinking features that ensure its relevance for decades to come.""By blending technical innovation with intelligent design, we have ensured that the arena continues to be a cultural and architectural landmark," added CF Mller Architects partner Mrten Leringe.HOK and CF Mller Architects updated the arena's seatingPreviously known as Stockholm Globe Arena and Ericsson Globe, the landmark Avicii Arena was the world's largest spherical building before the completion of the MSG Sphere Las Vegas in 2023. It was originally designed by Berg Arkitektkontor.With a diameter of 110 metres and an inner height of 85 metres, it represents the Sun in the Sweden Solar System the largest permanent scale model of the Solar System in the world.The building was renamed the Avicii Arena in 2021 to commemorate the late Swedish DJ Avicii.Its redesign forms part of wider regeneration in Stockholm and was carried out by HOK and CF Mller Architects for the client Stockholm Globe Arena Fastigheter (SGAF).Read: Ten spherical buildings from around the globeAlterations to the building include the introduction of a retractable roof, as well as improved acoustic and rigging systems. The seating has also been updated.Meanwhile, SBP has upgraded the arena's original structure while honouring its heritage-listed status."Updating a structure as unique as the Avicii Arena requires a careful balance of preservation and innovation," SBP managing director Knut Stockhusen."This project showcases how engineering excellence contributes to architectural heritage and modern performance."A new acoustic system was introducedAnother notable spherical building that recently made the headlines was the MSG Sphere Las Vegas. Designed by Populous, the building is wrapped in a 54,000-square-metre LED screen the largest of its kind. It is now the world's largest spherical building.Populous also designed a sphere-shaped venue for Stratford in east London. However, the venue was highly contentious and ultimately led to its creators, US company Madison Square Garden Entertainment, withdrawing the plans.It has since been revealed that the second version will be built in the UAE.The photography is by HOK unless stated otherwise.The post Giant spherical arena reopens in Stockholm following revamp appeared first on Dezeen.