This picture taken on Jun 26, 2019 shows a tourist taking a selfie photograph in front of the city skyline from the Mahanakorn Skywalk's observation deck area in Bangkok, Thailand. (AFP/Vivek PRAKASH)

NEW YORK: Bangkok ranked first in 2018 for the fourth straight year as the city with the most international visitors, according to an annual report by Mastercard released on Wednesday (Sep 4).