The patients weren't the only ones excited to see Stanley, as the visit brought joy to a lot of parents.
"It's really nice to have things like this to brighten up our days, because they get long here," said Amy, mother of four-month old Francesca. "We've been here a while, so it's nice to have small perks to being in a place we don't necessarily want to be in."
Amy was all smiles as a group of family friends sporting Pens gear gathered for a photo. And of course, her baby daughter was able to sit in the Cup for a picture with Dumoulin.
"It definitely makes it a happier place," Amy said.
Kelly McGill, a nurse on the abdominal transplant floor, was equally enthusiastic to see everyone so happy.
"To see something that has made the city so proud, something kids only dream of, and it's here - it's just really amazing," McGill said.
The Stanley Cup has made its way around the world, from Russia and Sweden to Canada and California, but bringing it to Pittsburgh's Children's Hospital was just as special.
"Anytime you go into a hospital, you realize there's never really a bad day," said Mike Bolt, Keeper of the Cup, as he watched the line of patients get their pictures taken. "Whatever problem is going on today, it's not (anything) compared to what people are having to deal with here, whether it's the parents or the children. It really puts everything into perspective."
Bolt also gave his respects to the incredible staff at Children's Hospital, as he called them "the real superheroes here. The ones who save the lives. They put in tireless hours to take care of a lot of sick children."
It meant a lot to Dumoulin that he got to be the one who delivered it and be a part of many heartwarming moments.
"It's cool to be a part of this experience," Dumoulin said. "To bring the Cup here and to see them smile and get out of their room, it's special. I remember when I was a kid and touched the Stanley Cup, it kind of put that goal in my head to try and win it one day."