City
Military headquarters would describe the city of Washington DC during the US Civil War.
On Atlas maps the Latitude and Longitude of any place will help us to locate the place. Each city/place has both Latidude and Longitude . In City maps the grid system is used to locate particular building or Hotel etc.
Lima
The term nucleus is used to describe the center of something, usually an atom or a cell; it could be used to describe the center of a city as well.
You would not describe England as crowded, but its city centres are much like other city centres.
Edmonton borders the Parkland, Sherwood Park and Strathcona counties.
Look in a city map
The phrase "It was used by the Roman Gladiators" does not describe the city of Teotihuacan.
Not quite. The city of Edmonton is located in a transition zone between the Boreal Forest and the Mixed Grass Prairie called the Aspen Parkland.
In the city of Babylon.
Ottawa, Ontario,