Semantically related names, cities within cities

A city is not merely a uniform mass of houses and streets. It often consists of distinct places and urban open spaces that stand out as unique from the rest of the urban area. Urban open spaces can vary in size and draw different kinds of boundaries; fences, facades or even entrance gates. Although Copenhagen, the capital of Denmark, once lay protected behind ramparts and gates, in the latter part of the 1800s the city broke through the ramparts and started to stretch across the landscape creating the districts of Amagerbro, Vesterbro, Nørrebro and Østerbro. The new districts were given names that denoted the four main roads into the earlier Copenhagen-behind-ramparts. The name Nørrebro originally meant ‘the northern main street’, by which one could enter the city. Today the name is synonymous with a neighbourhood with its own distinct characteristics, separate from the rest of Copenhagen.