Harvard University and Yale University in the USA and Oxford University and Cambridge University in the United Kingdom have a tradition of pairing their respective residential colleges or Houses with one another.[1][2][3] Colleges that are paired are referred to as sister colleges, and have a ceremonial and symbolic relationship to one another. Students at one college can often find accommodation at their sister college should they be visiting the other University; this is especially relevant to Harvard and Yale students during the annual The Game.