Glasgow and Boston's relationship reaches next level as twinned cities get official tartanA new bespoke tartan has been unveiled to celebrate the twinning of Glasgow and Boston. ‌Officially registered by Buchanan Galleries, the design has been named Twinned in Tartan and was commissioned to celebrate the positive impact Scotland fans left on Boston. View 3 Images The Twinned in Tartan design. 'Twinned in Tartan' is our way of celebrating that connection, while creating a lasting symbol of friendship between Glasgow and Boston. The ‘Twinned in Tartan’ design is a creative and distinctly Scottish way to celebrate it.