<Tr> <Th_colspan="2"> Website </Th> </Tr> <Tr> <Td_colspan="2"> theo2.co.uk </Td> </Tr> <P> The O2 is a large entertainment district on the Greenwich peninsula in South East London, England, including an indoor arena, a music club, a Cineworld cinema, an exhibition space, piazzas, bars and restaurants . It was built largely within the former Millennium Dome, a large dome - shaped canopy built to house an exhibition celebrating the turn of the third millennium; consequently The Dome remains a name in common usage for the venue . It is sometimes referred to as The O2 Arena, but that name properly refers to a smaller indoor arena within The O2 . Naming rights to the district were purchased by the mobile telephone provider O2 from its developers, Anschutz Entertainment Group (AEG), during the development of the district . AEG owns the long - term lease on the O2 Arena and surrounding leisure space . </P> <P> From the closure of the original "Millennium Experience" exhibition occupying the site, several ways of reusing the Millennium Dome's shell were proposed and then rejected . The renaming of the Dome in 2005 gave publicity to its transition into an entertainment district . The Dome's shell remained in situ, but its interior and the area around North Greenwich Station, the QE2 pier and the main entrance area were completely redeveloped . </P>

What part of london is the o2 arena in