Oprah Winfrey, Orlando Bloom, Kylie Jenner and Ivanka Trump were just some of the celebrities seen on the boats and streets of the Italian city on Thursday and Friday.
But the event has attracted protests from a variety of groups in Venice, including locals fighting over-tourism to climate change activists.
The festivities are expected to last three days, ending with a large party for the married couple and their hundreds of guests on Saturday.
