Urban Geography: Key Concepts and City Structures Explained

Metropolitan Area

An urban region that includes a central city—which gives the area its name—and a series of satellite cities that often function as dormitory towns due to a process of conurbation.

Periurban Settlements

These settlements are arranged around cities, representing a transition zone between town and country. They feature mixed land uses and a blend of urban and rural lifestyles, often emerging as a result of urban growth.

Business Centre

The district where trade, business, and elite services are concentrated, including administration and commerce. These centers are usually located near the city core, sometimes within historic districts.

City Centre and Old Town

The heart of the city, corresponding to the pre-industrial stage of urban growth. Key features include:

• Remnants of historic buildings.
• Irregular street layouts.
• Low-rise, older architecture.
• Historical and artistic heritage sites.
• Government buildings and autonomous administration offices.
• Hubs for entertainment and culture.

Urban Location

The specific physical space where a city is situated, defined by environmental characteristics. Cities founded for defensive purposes differ significantly in location from those established for commercial functions along communication lines.

Urban Morphology

The external appearance of a city, defined by its street plan, construction styles, and land use.

Radiocentric Plan

A city layout where streets originate from a central point, extending radially and intersected by concentric circular tracks.

Urban Widening

A policy of urban expansion prevalent from the mid-19th century to the early 20th century. Driven by population growth from industrial or tertiary activities, these areas typically follow a grid plan, with Madrid and Barcelona serving as primary examples.

Urban Functions

Socio-economic activities performed by cities for the external environment rather than internal service. Cities are classified as primary, secondary, or tertiary, though most modern cities are multifunctional.

Urban Hierarchy and City Systems

The organization of cities into categories based on population size, functional diversity, quality of services, and sphere of influence. Categories include large cities, medium cities, and small towns or villages.

Conurbation

A continuous urban area formed by the parallel growth of two or more cities that eventually merge. While they join physically, each city within the metropolitan area maintains its administrative independence, often linked by major traffic arteries"