The banded black-and-white Château d'Angers, built by St. Louis (1228–38), glowers over the town from behind turreted moats, now laid out as gardens and overrun with flowers. As you explore the grounds, note the startling contrast between the thick defensive walls, guarded by a drawbridge and 17 massive round towers in a distinctive pattern, and the formal garden, with its delicate white-tufa chapel, erected in the 15th century. For a sweeping view of the city and surrounding countryside, climb one of the castle towers. A well-integrated modern gallery on the castle grounds contains the great Tenture de l'Apocalypse (Apocalypse Tapestry), woven in Paris in the 1380s for the Duke of Anjou. Measuring 16 feet high and 120 yards long, its many panels show a series of 70 horrifying and humorous scenes from the Book of Revelation. In one, mountains of fire fall from heaven while boats capsize and men struggle in the water; another features the Beast with Seven Heads.