Eia or Eye was an early medieval manor in Westminster, Middlesex and is now a part of Central London. It was about one mile west of the Palace of Westminster/Whitehall, about 2 miles west-south-west of the walled City of London, and about half a mile north of the River Thames.
Today, the area of the manor includes much of Hyde Park (which dates from 1536), the grounds of Buckingham Palace (1703), Belgravia, a country road known later as Park Lane and most parts of Mayfair, Pimlico, and Knightsbridge.