What is the name given to the oldest central part of a city?

The term "Core" refers to the oldest central part of a city, often characterized by its historical significance, original settlement area, and a concentration of cultural and economic activities. This area typically includes landmarks, historical buildings, and the primary commercial zone, reflecting the city's development over time. Understanding this concept is important as it highlights how urban areas evolve and how the core can significantly influence the surrounding urban environment and its growth patterns.

While "Downtown" usually denotes the commercial hub in modern cities and "Historic Centre" emphasizes the heritage aspect of a city's old part, they may not always represent the very oldest sections. "Central Zone" is a broader term that can include various urban activities or regions but does not specifically point to the historical aspect. Thus, the term "Core" specifically conveys the essential idea of the oldest, most foundational part of a city.