Kaiserswerth is a relaxed riverside suburb with a village feel, known for the ruins of Kaiserpfalz, a 12th-century castle with striking views of the Rhine and surrounding countryside. Cobblestone streets are lined with baroque buildings housing boutiques, gift shops and stores selling cheese, wurst and sweets. The main square, Kaiserswerther Markt, is ringed by cafes and beer gardens dishing up classic German food.