The Children's Hospital of Philadelphia, the first medical institution in America dedicated purely to caring for sick and injured children. CHoP first opened its doors in 1855 and today has a reputation as one of the finest pediatric hospitals in the USA, and indeed worldwide.

As well as the "front-line" services such as cure and care, CHoP has a large research facility which investigates a wide range of ailments affecting children. Of particular historical note is that vaccines for mumps, whooping cough and influenza were developed there, and currently much work is involved investigating child cancer and HIV.

Node what you don't know: information compiled predominately from CHoP website after an unrelated conversation!