Millennium Dome

The Millennium Dome, now known as The O2, is a large, iconic structure in London built to celebrate the year 2000. It features a huge, dome-shaped roof covering an exhibition space used for various events and concerts. Originally holding the Millennium Experience exhibition, it faced mixed success and was later transformed into a popular entertainment venue with shops, restaurants, and concert halls. The design is notable for its massive, tensioned roof supported by a series of cables, making it one of the largest domes in the world. It serves as both an architectural landmark and a social hub.