The winners were determined using an algorithm which analyses the millions of reviews and ratings for hotels, restaurants and attractions.
And this year, London secured the first place position in the TripAdvisor Travellers Choice Awards.
Paris took second spot this year, with Rome rolling in at third place and Crete in fourth.
Despite being a long-time favourite with travellers worldwide, New York slipped out of the top 10.
“The global fascination with Harry and Meghan clearly has a powerful effect”
London came second in 2018 and TripAdvisor says that its move into the top spot might be connected to the Royal Wedding last year.
Hayley Coleman, a spokesperson for TripAdvisor, said: “The global fascination with Harry and Meghan clearly has a powerful effect as this is the first time since 2016 that London has topped the world rankings.
“With the couples new baby due imminently, London may continue to reap the rewards of the Harry and Meghan effect into 2020.”
Also proving popular is Bali, in fifth place, and the Thai resort of Phuket in sixth.
CAPITAL CITY: London topped the list on the TripAdvisor Travellers' Choice Awards (Pic: GETTY)
TripAdvisors top-rated holiday destinations for 2019 revealed:
12. Siem Reap
13. New York City
SPRING: Tokyo, Japan, was 16th on the list (Pic: GETTY)
17. Playa del Carmen
22. Hong Kong
25. Tel Aviv
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