Where in the world?
The flag of Heard Island and McDonald Islands has a blue field with the Union Jack in the canton and a badge featuring a white disk with a red border containing a depiction of a penguin.

Heard Island and McDonald Islands

Population: 0

Region: Antarctic

Subregion: Antarctic

Capital: N/A

Top Level Domain: .hm, .aq

Currencies: Australian dollar

Border countries

No bordering countries