Porta Siberia is a massive gate, dating back to 1551-53. It was the work of Galeazzo Alessi and once formed part of the 16th-century walls. Its name derives from 'cibaria' (foodstuffs), for it was through this gate that the city's produce passed, both on arrival from the sea and departure towards other ports in the Mediterranean.Once used as a customs area, after the Old Port was restructured it was turned into a museum devoted to the painter and set designer Emanuele Luzzati, housing temporary exhibitions by the Genoese artist and by leading contemporary illustrators.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.