The Octagon, the £110m residential scheme in the city's Paradise development, has 'topped out', marking the highest point of construction. A ceremony was held at the top of the 155-metre tall tower to celebrate the achievement. The 49-storey structure is not only the tallest building in Birmingham and the wider Midlands, it is also the world’s highest pure octagonal residential tower. It is considered the city’s first official skyscraper by being the first building to exceed 150 metres. It is due to be completed in summer 2025. The Octagon, developed by Singapore-based City Developments Ltd, is part of the £1.2bn Paradise development, which will deliver up to ten new buildings and three new public squares.