Yes, New York City has a very famous castle called Belvedere Castle, located in the heart of Central Park. Built in 1869 on Vista Rock (the second-highest natural point in the park), it was designed as a "folly"—a decorative building meant to provide beautiful views of the surrounding landscape. In 2026, the castle serves as a visitor center and a nature observatory. Its name, "Belvedere," translates to "beautiful view" in Italian, and it offers some of the best panoramic shots of the Great Lawn and Turtle Pond. While it isn't a royal residence, it features a Gothic-inspired turret, stone balconies, and a distinctive silhouette that looks straight out of a fairy tale. Interestingly, the castle also houses the official weather station for Central Park, where the city's temperature and wind speed readings are taken. It is free to visit and remains one of the most photographed architectural gems in Manhattan, especially during the autumn when the surrounding trees change color.