In the late 1990s, the UK government used several hundred million pounds from the National Lottery to fund a massive dome in Greenwich, London, intended to mark the arrival of the third millennium. The structure, called the Millennium Dome, was meant to be a grand celebration, similar to the Festival of Britain in the 1950s, but on a much larger scale. The Labour government, led by Tony Blair, expanded the project from its original, smaller conception under the previous Conservative government. The chosen site was the Greenwich peninsula, a long-abandoned area once contaminated by toxic waste from an old gas works. After failing to attract private investors, the government decided to fund the project entirely through the National Lottery. Construction of the dome began in June 1997 and was completed on time and within budget. The structure, made of fiberglass stretched over steel masts, covered an area of 300 acres. The Millennium Experience, the exhibition inside, opened on January 1, 2000, and featured thematic areas on topics like money, the body, and work, combined with live performances and a science exhibition. However, attendance was far below expectations, and the project quickly became a financial and management disaster. The exhibition lost money, and internal chaos led to the firing of Jennifer Page, the Chief Executive of the New Millennium Experience Company, just a month after the opening. The government had to repeatedly request additional funding from the Millennium Commission, the body overseeing the project. The failure of the Millennium Dome led to public embarrassment and political fallout. The project was criticized for its cost and poor planning, and it is believed to have damaged the political careers of key ministers, including Peter Mandelson and John Prescott. The exhibition closed as planned on December 31, 2000, leaving behind an empty and controversial building. For nearly five years, the dome stood unused, drawing criticism for the public funds spent on its upkeep. By the mid-2000s, a solution emerged. In 2004, the site and structure were sold to Meridian Delta Ltd, a private developer, who transformed the area into a leisure district. The dome was renamed the O2 and redeveloped into a major entertainment complex, featuring concert halls, cinemas, shops, and housing. The O2 opened in 2007 and now hosts millions of visitors annually, revitalizing the local economy. Despite the initial failure of the Millennium Experience, the dome's engineering remains a significant achievement, and the O2 stands as a successful legacy of what was once a controversial project.