The Christmas lights will be on from 6 November until 6 January (2016-2017) in London where the streets will be closed, and there will be a festival for when they are switched on. The Christmas Tree in Trafalgar Square arrive on 1 December and they are both truly a wonderful sight if you do manage to go and see them. This is a great time to visit London, and there are also lots of ice rinks if you like to skate. Somerset House which is near Trafalgar Square is a popular one, but book tickets early if you go at the weekend.
I think that would be gorgeous to see! I feel like there's so many great Christmas things happening all over the world that make it a really fun and unique time to experience a new city. One other thing I would love to do at Christmas time is go to Germany - I've heard wonderful things about the Christmas markets there too!
I would love to see such a spectacle. The largest Christmas tree I had seen was the one in Disneyland Hong Kong. I'm sure that one in London will be much bigger and more elegant. Well, I can dream for now. Another Christmas tree that I like to see is the one in New York City.