Who wins?
London vs Barcelona
London wins 69% to 31%. 34 more put them in the same row. From World's Most Visited Cities Tier List. Pick a side.
tony.z7045 on London: stayed at my cousin's for a month and still had stuff left to see
ItsFrog2k on Barcelona: beach plus Gaudi plus tapas at 10pm, the most perfect city for a week
World's Most Visited Cities Tier List: the full ranking