This Is Christmas was filmed in the fictional town of Santaland, California. The town is known for its whimsical decorations and festive atmosphere, making it the perfect location for a Christmas film. Santaland is also home to the North Pole and Santa's Workshop, where the majority of the film takes place. The production crew had to create a winter wonderland from scratch, using artificial snow, ice, and other special effects to make the town look like a real winter wonderland. It was a challenging and rewarding process, but the end result was a magical and unforgettable Christmas film.