 Rain coming through the giant hole it left behind. We've been following the restoration of the cathedral for years now. ABC News has been granted rare access to Paris' 800-year-old treasure. In 2021, we saw the work begin. The huge task of closing that gaping hole seemed almost impossible. And then last year, we climbed our way to the top and saw the fresh timbers laid. You can see that bunch of flowers. That's a gift from the carpenters to say that they're done with this part.