Where in the world could this be?

A woman wearing a wide-brimmed black hat with a white band and a dark navy double-breasted coat stands with a serious expression. A purple text box at the bottom reads 'I DID IT! I FOUND CARMEN SANDIEGO!' in bold white letters. The image is a still from the TV show 'The Crown', featuring actress Claire Foy as Queen Elizabeth II, humorously mislabeled as Carmen Sandiego.