The O2 (Millennium Dome)

The O2, formerly known as the Millennium Dome, is a large, iconic indoor arena in London built to celebrate the year 2000. It features a massive, domed roof made of steel and tensioned fabric, covering a space used for concerts, sports, and events. The structure is supported by a series of steel arches and cables, allowing for an impressive internal open area without columns. Originally focused on the millennium celebration, it has been transformed into a major entertainment and leisure complex, including a shopping center, attractions, and a music venue, making it a versatile hub for cultural activities.