WHICH TWO CAPITAL CITIES (OF COUNTRIES MEMBERS OF THE UN) ARE CLOSEST TO EACH OTHER? August 17, 2017 By Show answer BRAZZAVILLE (REPUBLIC OF THE CONGO) AND KINSHASA (DEMOCRATIC REPUBLIC OF THE CONGO) ARE ACROSS THE CONGO RIVER FROM EACH OTHER. VATICAN CITY LIES WITHIN ROME BUT IS NOT A MEMBER OF THE UN More Geography QuestionsMore World Geography Questions