Some window washers give some sick children the surprise of their hospital stay.

FOX News Radio's Lilian Woo reports:

Some hospitalized kids prescribed a special treatment: a face-to-face with superheroes.

(Child) "I just got so happy, I've never seen superheroes."

That's one of the children who got to see the likes of Superman, Spider-Man and Wonder Woman rappelling down the side of a children's hospital in the San Francisco Bay Area.

The costumed window washers waving to the kids inside as they worked then joining their fans inside.

The event... part of the Child Life Services program at UCSF Benioff Children's Hospital. Its goal... to bring kids much more than their medical services.

Lilian Woo, FOX News Radio.