What is the O2 in London?
The O2 is a large entertainment complex on the Greenwich Peninsula in London, originally built as the Millennium Dome. It includes the O2 Arena, one of the world's busiest music venues, along with restaurants, cinemas and shops.
The Millennium Dome was built to host the Millennium Experience, an exhibition celebrating the year 2000. The exhibition was widely criticized and closed at the end of 2000.
The building was redeveloped and reopened as the O2 in 2007, named after the mobile phone company that sponsored it.
A world-famous arena
The O2 Arena holds around 20,000 people and hosts concerts, sports events and comedy shows. Artists such as Prince, Beyonce, Adele and Taylor Swift have performed there.
Visitors can also walk over the roof of the dome on a guided climb called Up at The O2, enjoying views of London.
The dome's white roof is supported by 12 yellow towers, which represent the months of the year or the hours on a clock face. The O2 is reached by the Jubilee line at North Greenwich station or the IFS Cloud Cable Car across the Thames.