Season opener

As I passed through the square I could see people working
with colored replica's of the monastery's rose window.

The next day the Christmas market tents were going up.

I could see that the rose windows were on the large tree,

but I have no idea what is in the big red bags.

This evening was the grand lighting of the tree

and the replica rose windows

that are near the monastery

and lining the pedestrian mall.

The booths were selling locally made art and lots of Christmas decorations.

My favorite nativity scene was in the stained glass showroom.

What would Christmas in Catalonia be without the caganer in the nativity scene?
This is only one of two famous Catalonian Christmas traditions involving defecation.

You'll want to know more, I am sure. Below is someone else's post
and I will copy it in its entirety because it explains both traditions

It's Christmas Eve, which means children across Spain's Catalan region are gathering in their homes for the traditional whacking of the festive shit log.

Tió de Nadal (Christmas log), a hollow log with stick legs, a smiley face, and a floppy red hat, is a yule branch with a scatological spin. (Its other name is Caga Tió, or "shit log," for reasons that will shortly become apparent.)

On December 8 each year — the Feast of the Immaculate Conception — families bring out the happy log. Every night until December 24, children are tasked with "feeding" the log by offering him nuts, dried fruit, and water. Kids must also cover Tió de Nadal with a blanket to ensure he stays warm and comfortable.

On Christmas Eve, it is time for the little shit log to shine. Children gather around the red-hatted branch and beat him with sticks while singing the traditional Tió de Nadal song:

Shit log,
Shit nougats,
Hazelnuts and mató cheese,
If you don't shit well,
I'll hit you with a stick,
Shit log!

Then comes the miracle: the kids look under Tió de Nadal's blanket and discover that the dear log has pooped out a pile of candies and presents. (The end of the defecation session is signaled by the presence of a stinky herring.) When everyone has collected their gifts from Tió de Nadal, the family burns him for warmth.

The poop log is not Catalonia's only defecation-based festive tradition. Take a close look at any nativity scene in the area and you'll spot Caganer, a porcelain man copping a squat in the presence of Mary, Joseph, and the Three Wise Men. Caganer is not meant to be sacreligious — his fertilization of the holy ground heralds a prosperous harvest in the new year.