Château de Villeneuve-Loubet, property of the Panisse-Passis family, is a superb 13th-century defensive structure, with a pentagonal keep. It was built in the 13th century, at the instigation of the Counts of Provence and Romeo of Villeneuve. Ramparts and parapet walks are punctuated with five round towers and a mediaeval drawbridge. French King Francis I stayed there in 1538 to sign the Truce of Nice with the Emperor Charles V, a pact which put an end to the Italian Wars.References:
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.