Guess what these are

On one of our first evenings in Florence, we came across these beautiful, lighted objects near the Ponte San Trinità. They weren’t here last time we were in Florence and I was just delighted by them. Can you guess what they might be?

On closer inspection, we discovered that they were olive trees wrapped in some sort of white cloth and then lit from below. They were my favorite new addition to Florence, but then we went back to see them again a few days later and they were gone. We wondered if maybe they were holiday decorations. I guess I’ll have to come back to Florence again in the winter and see if they are here around the holidays.