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.

[2]The flag was regularised in 1982 and is formed by two horizontal bands of white (top, double width) and red with a three-towered red castle in the centre of the white band;[3] hanging from the castle gate is a gold key centred in the red band.

Prominent places which fly the flag include the frontier with Spain, at the top of The Rock and on the Parliament Building.

For the Gibraltar National Day (10 September), many Gibraltar homes and offices hang the flag from their windows and balconies, and some individuals even wear and dress their vehicles with the flag for national day celebrations.

[citation needed] A Lego flag of Gibraltar 4 metres (10') high and 8 metres (30') long can be seen at the John Mackintosh Hall, which is a cultural centre housing the public library as well as exhibition rooms and a theatre.