Every year around two million children need hospital treatment in the UK.
Those who need life-saving care are often taken to specialist Children's Hospitals which could be many miles away from their homes.
For parents to stay near their children, many hospitals rely on charities, such as the Sick Children's Trust, to provide accommodation.
It keeps families together, helping them to cope through a stressful time - and is even more important at Christmas.
Julia Barthram has been to meet a family at the Freeman Hospital in Newcastle.