The East End is the area closest to the original Port of London, known for its high immigrant population, as well as for being one of the poorest areas in London.[211] The surrounding East London area saw much of London's early industrial development; now, brownfield sites throughout the area are being redeveloped as part of the Thames Gateway including the London Riverside and Lower Lea Valley, which was developed into the Olympic Park for the 2012 Olympics and Paralympics.[211] Architecture