Keep: Castles of the World

A castle you cannot quite see. Four names. One guess, and the veil lifts. Keep is a small, beautiful atlas of the world's great castles, built like a rare book. Every day brings one veiled plate: a castle blurred to shadow, somewhere in Germany, or Japan, or Wales. Name it from four, and it resolves into a museum-mounted photograph, a three-dimensional flyover of its actual hill, and a five-card story. WHAT YOU GET • The daily castle, and rounds of ten whenever you like • 200 castles across 64 countries, from Himeji to Neuschwanstein to Krak des Chevaliers • A 3D flyover of each one, so you can circle the walls • Street-level Look Around where Apple has photographed the ground • The story, set with an illuminated initial, from Wikipedia contributors • A "did you know" line written on your iPhone, by Apple Intelligence, from the article itself • Your atlas: how many you have seen, and…