Where in the world?
The flag of Belgium is composed of three equal vertical bands of black, yellow and red.

Kingdom of Belgium

Native name: BelgiumPopulation: 11,555,997Region: EuropeSub region: Western EuropeCapital: BrusselsTop level domain: .beCurrencies: EuroLanguages: German, French, Dutch
Border Countries:FranceGermanyLuxembourgNetherlands