Gloucester Cathedral is a masterpiece of English Gothic architecture set at the heart of the city. The cathedral welcomes visitors to explore 1,000 years of history and architecture including its extraordinary fan‑vaulted medieval cloisters and the Great East Window, both considered national treasures. The cloisters, built in the 14th century, are among the earliest examples of fan vaulting in Europe and enclose a peaceful central garth. The cathedral runs tours, concerts and family activities, and visitors can use an interactive app to explore where Harry Potter scenes were filmed.