Melilla is a city in North Africa, which is separated from Spain by the Mediterranean Sea. It is an exclave that belongs to Spain, and is all surrounded by Morocco, which believes it should belong to them. Ceuta is another such city. Until it became a self-governing city in 1995, it belonged to the Province of Málaga.
Its surface is about 20 square kilometers, and there are almost 70,000 people living there.
References
↑Municipal Register of Spain 2018. National Statistics Institute.