Flag of Gibraltar
|Design||White with a red stripe at the bottom with a three-towered, two-tiered red castle in the white section. Each tower has a door and a window and from the door of the middle tower hangs a gold key which mainly overlaps the red stripe. |
The flag of Gibraltar is an elongated banner of arms based on the coat of arms of Gibraltar, granted by Royal Warrant from Queen Isabella I of Castile on 10 July 1502. 
The castle does not resemble any in Gibraltar, but is supposed to represent the fortress of Gibraltar. The key is said to symbolise the fortress' significance as Gibraltar was seen to be the key to Spain by the Moors and Spanish and later as the key to the Mediterranean by the British.