1. Bangkok, Thailand
Photo: Bangkok, Thailand. (photo via Littlewormy/Dreamstime)
Bangkok remains the world's most-visited city after hosting more than 22 million international overnight visitors in 2018. That's over 3 million more than Paris and London. Still, the destination, which has ranked first six out of the last seven years, shows no signs of slowing as it's forecasted to grow by 3.34 percent in 2019. It should also be noted that Bangkok, London and Paris have comprised the top three in some order every year since 2010.