Gibraltar Flag
 
Flag Description:
two horizontal bands of white (top, double width) and red with a three-towered red castle in the center of the white band; hanging from the castle gate is a gold key centered in the red band; the design is that of Gibraltar's coat of arms granted on 10 July 1502 by King Ferdinand and Queen Isabella of Spain; the castle symbolizes Gibraltar as a fortress, while the key represents Gibraltar's strategic importance - the key to the Mediterranean

 

 

 

 

Source: CIA The World Factbook