Should "shopping centers" be accepted as alternative answer?
Please moderators, make 'shopping centres' a correct answer. British English speakers instinctively use 'shopping centre' rather than 'mall'. The word 'mall' to us is foreign, unnatural; ugly even.
Since it is hard to imagine a square that is actually the color red, it is only natural to assume that the sentence refers to a square that is named "Red Square" in which case "the" is most likely to be omitted in American speech.
But if it's a proper name, the đ should be capitalized.
I agree with Dan comments
Is this THE Red Square or a red square?
With no classifier, I would have thought THE Red Square.