Durham, a historic city in the northeast of England, offers a delightful blend of rich heritage, stunning architecture, and picturesque landscapes, making it an ideal destination for a summer vacation. Whether you're interested in exploring medieval castles, wandering through tranquil gardens, or indulging in culinary delights, Durham has something to offer for everyone. In this article, we'll take a closer look at the top 10 summer vacation activities in Durham to help you plan your trip. 1.…