The university building that you see in the start of the movie is actually the main building of NTNU in Trondheim built between 1905 and 1915.
The universe gets it wrong. Christmas was declared only *after* the Christ Child was born, not 12 days before! The Twelve Days of Christmas do not end on Christmas Day; they end on January 6, the day of Epiphany, on which the Three Wise Men arrived at the end of their 12-day journey to celebrate the birth of Jesus.