Belgravia is a district in the City of Westminster and the modern Royal Borough of Kensington and Chelsea. It was developed in the 19th century as fashionable terrace residences.

In London Labour and the London Poor edition: 

Phase 1

London Considered as a Great World. (The Great World of London): "Viewing the Great Metropolis, therefore, as an absolute world, Belgravia and Bethnal Green become the opposite poles of the London sphere - the frigid zones, as it were, of the Capital; the one icy cold from its exceeding fashion, form, and ceremony; and the other wrapt in a perpetual winter of withering poverty. Of such a world, Temple Bar is the unmistakable equator, dividing the City hemisphere from that of the West End, and with a line of Banks, representative of the Gold Coast, in its immediate neighbourhood. What Greenwich, too, is to the merchant seamen of England, Charing Cross is to the London cabmen - the zero from which all the longitudes of the Metropolitan world are measured."

A Visit to the Cholera Districts of Bermondsey (Morning Chronicle): "We might lay our fingers on the Ordnance map, and say here is the typhoid parish, and there the ward of cholera; for as truly as the West-end rejoices in the title of Belgravia, might the southern shores of the Thames be christened Pestilentia."