Each year the city of Halifax, Nova Scotia, commemorates its gratitude for relief Boston extended in the aftermath of a deadly harbor explosion in 1917. The Canadians deliver a large Christmas tree, which is then erected and decorated in the heart of Boston.
The lighting itself is quite an extravaganza, as I learned the first time my choir participated in the event at historic Quincy Market. Imagine seeing yourself on the Jumbotron while you sing.
Boston is a rich and varied destination – the Hub of New England, or the Universe, as they used to say. Living a little more than an hour to the north, we’re well within its orb.
Jnana's Red Barn 
Lovely. Every year since WWII, Norway sends a giant Christmas tree to Edinburgh, Scotland, to commemorate Scotland’s harbouring of the Norwegian army in the fight against Nazism.