World Travel City Photography

South Korea has a system of dividing into metropolitan cities, provinces, a special city (Seoul) and one specially self-governing province (Jeju-do). In South Korea, cities should have a population of more than 150,000, and if a city has more than 500,000, it would be divided into 2 districts and then sub-communities follow as a name of dong with similar system of normal cities. Additionally, if a city's population is over 1,000,000, then it would be promoted to metropolitan city.
Seoul is the world's second largest metropolitan area.
Sweden
Sweden canceled the official legal term City (in Swedish: stad) in the year 1971. Only the word municipality (in Swedish: kommun) prevails, making no legal difference between Stockholm and a countryside municipality. Before that there were a number of terms like "stad"/Town, "köping"/large village etc. The definition of City/Town (stad) was merely that it was given such a title. Since the 1980s some municipalities (13 out of 290) being "stad" before 1971, again call themselves town (stad), but only in tourist advertising. This has no legal or administrative significance whatsoever, and the municipalities have to use the word "kommun" by law. In other cases the seat of the municipality is called "town".