The Jesse Window at Wells Cathedral is one of the most splendid examples of 14th century stained glass in Europe. The window, in its dominant colours of green and gold, depicts a Jesse tree and shows the family and ancestors of Christ, Jesse being the father of King David.
It dates from about 1340 and, considering its age, is still remarkably intact. Fortunately, the window has survived the vicissitudes of time and British history (narrowly escaping destruction during the English Civil War) and so what we see today is basically how medieval glaziers designed and created it and how our ancestors viewed it before us.
There have been sensitive repairs over the centuries, of course, and steps were taken during World War II to protect the Window.
The Cathedral embarked, however, on a major project to conserve the Jesse Window in 2011. More about this ambitious project can be found in the Conservation section here.