The Millennium Dome, colloquially referred to simply as The Dome or even The O2 Arena, is the original name of a large dome

Dome

A dome is a structural element of architecture that resembles the hollow upper half of a sphere. Dome structures made of various materials have a long architectural lineage extending into prehistory....

-shaped building, originally used to house the Millennium Experience, a major exhibition celebrating the beginning of the third millennium. Located on the Greenwich Peninsula

Greenwich Peninsula

Greenwich Peninsula is an area of South London, England, located in the London Borough of Greenwich.The peninsula is bounded on three sides by a loop of the Thames, between the Isle of Dogs and Silvertown. To the south is the rest of Greenwich, to the south-east is Charlton.The peninsula lies...

 in South East London

South East (London sub region)

The South East is a sub-region of the London Plan corresponding to the London Boroughs of Bexley, Bromley, Greenwich, Lewisham and Southwark. The sub region was established in 2008. The south east has a population of 1,300,000 and is the location of 500,000 jobs...

, England, the exhibition was open to the public from 1 January - 31 December 2000. The project and exhibition was the subject of considerable political controversy as it failed to attract the number of visitors anticipated, with recurring financial problems. All of the original exhibition and associated complex has since been demolished.