In the middle of the 15th century, a slender chapel, one of the most beautiful Gothic buildings in Slovakia, was added to the south wall of the parish Church of St. Ladislaus in Spišský Štvrtok. Although it is considered to be a funeral chapel, neither this chapel nor its French model, the Sainte-Chapelle which inspired it, is used for this purpose.      The chapel in Spišský Štvrtok contains a small riddle which has not yet been reliably solved: who built it here and why? Both visitors and researchers who admire the chapel have asked a similar question for...