Greater London is often referred to as "the City" or "the Square Mile" and it forms the main financial district. Archaically, the urbanised area of London was known as the Metropolis. In common usage, the terms "London" and "Greater London" are usually used interchangeably. Greater London is officially divided for some purposes, with varying definitions, into Inner London and Outer London. For some strategic planning purposes it is divided into five sub-regions. Greater London is under the strategic local governance of the Greater London Authority (GLA). It consists of an elected assembly, the London Assembly, and an executive head, the Mayor of
Hartford City Courthouse Square Historic District has over 60 resources, including over 40 contributing buildings, over 10 non-contributing buildings, 1 contributing object (a World War I statue), 8 non-contributing objects, and two other buildings that are listed separately in the National Register. Much of the District's significance relates to the discovery of natural gas in the east central region of Indiana. The discovery led to a regional economic boom known as the Indiana Gas Boom. Beginning in the late 1880s and lasting for about 15 years, the Gas Boom changed the economy and the appearance of the region. The Hartford City Courthouse Square Historic District is