Remarkable new high-tech images reveal the face of the real-life bishop who inspired the concept of Santa Claus — more than 1,700 years after he first made Christmas merry and bright.

And he delights at finding a few of Rudolph's stray sleigh bells in the fireplace on Christmas morning ... together in their minds that Santa Claus may not be real, they'll ask questions ...

The flight tracking service Flightradar24.com simulates the current position of Santa's sleigh as he flies across the globe delivering Christmas ... Saint Nicholas in real-time.

has been tracking Santa's sleigh and his nine reindeer since 1955, allowing children throughout the country to keep tabs on the man in red as he makes his Christmas deliveries each year.

Santa Claus is a mythical figure ... he prepared all these gifts with the help of Christmas elves living in the North Pole and delivered them on a sleigh flying through the air with the aid ...