In Iceland, it's considered polite to keep Christmas lights up well into January.
In Iceland, there's a tradition called "Jólabókaflóð," which translates to "Christmas Book Flood." It involves exchanging books as gifts on Christmas Eve and spending the night reading while enjoying chocolate.
In Iceland, there's a belief in hidden people called "Huldufólk," supernatural beings resembling humans, often living within rocks and hills.