Nuremberg's medieval Old Town (Altstadt) packs an unusual density of highlights into a compact, walkable core, which is why this shortlist works so well for a brief stay. Nuremberg Castle overlooks the city from its sandstone perch, while the Hauptmarkt below buzzes around the Beautiful Fountain, its slender Gothic spire covered in gilded figures. St. Sebald Church and St. Lorenz Church anchor the two halves of the old town with soaring twin-tower facades, and the German National Museum rounds things out with centuries of German art and culture under one roof. Together they deliver the essential Nuremberg experience without wasted steps.