He actually saw the sign of the Cross in front of the Sun according to my copy of the encyclopedia Britannica. His mother is a Saint, and according to both popular myth and partially(but not fully) historically evidenced fact was the person who first set foot in Christ’s vacated Tomb when it was rediscovered(along with Calvary itself) in the 4th century AD on the site where the Orthodox Church of the Holy Sepulcre(or Tomb) is. She is said to have found inside crucifixion nails, two thorns(from the Crown, they are of a plant believed only to grow in Israel),
a shroud(This is interesting hypothesis by “pro-Turin as real Shroud and Relic” historians and would explain alot… But you never know with God!), the sign that Pilate wrote and stuck on the cross, and the Cross itself(she actually found all 3 Crosses used on that day stored in the Tomb, including that of the “Good Thief”) and a few other relics.
She did oversee the destruction of the Roman Temple that was over the site and also what we would today call the “archelogical dig”. But weather or not she was the first person to set foot in the tomb is another matter altoghether, but it is certainly likely. But she is a Saint.