The Thermes de Cluny are the ruins of Gallo-Roman thermal baths lying in the heart of Paris" 5th arrondissement. The present bath ruins constitute about one-third of a massive bath complex that is believed to have been constructed around the beginning of the 3rd century. The best preserved room is the frigidarium, with intact architectural elements such as Gallo-Roman vaults, ribs and consoles, and fragments of original decorative wall painting and mosaics.
It is believed that the bath complex was built by the influential guild of boatmen of 3rd-century Roman Paris or Lutetia, as evidenced by the fact that the consoles on which the barrel ribs rest are carved in the shape of ships" prows. Like all Roman Baths, these baths were freely open to the public, and were meant to be, at least partially, a means of romanizing the ancient Gauls. As the baths lay across the Seine river on the left bank and were unprotected by defensive fortifications, they were easy prey to roving barbarian groups who apparently destroyed the bath complex sometime at the end of the 3rd century.
The bath complex is now partly an archeological site, and partly incorporated into the Musée national du Moyen Age, and as such is the occasional repository for historic stonework or masonry found from time to time in Paris. The spectacular frigidarium is entirely incorporated within the museum and houses the Pilier des Nautes. Although somewhat obscured by renovations and reuse over the past two thousand years, several other rooms from the bath complex are also incorporated into the museum, notably the gymnasium which now forms part of gallery 9 (Gallery of French Kings and sculptures from Notre Dame). The caldarium (hot water room) and the tepidarium (warm water room) are both still present as ruins outside the Musée itself and on the museum"s grounds.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.