The walls of Krk are preserved almost entirely, and their oldest parts date back to the distant past. According to archaeological excavations it is assumed that they date back to the 3^rd century BC.  These parts are dry-stone built megalithic blocks that precede the Roman style of construction. An inscription from the 1^st century BC, which mentions the restoration of the walls of the prehistoric town of Krk, which at that time was called Curicta, also testifies to the age of the walls. The layering of the wall’s construction can be seen in the Perossi House (Volsonis cafe). Today's walls were mainly built in the 14^th and 15^th centuries. From the towers, which existed within the walls in ancient times, we can also see those from the Middle Ages and the Renaissance. An integral part of the walls is the Frankopan castle, built in several stages from the 12^th to the 18^th century.