The Triple Bridge is a group of three bridges across the Ljubljanica River. It connects the Ljubljana's historical, medieval, town on one bank, and the modern city of Ljubljana, capital of Slovenia, on the other.
The central bridge is partly built from Glinica limestone. Other parts are built from concrete. The balustrades with 642 balusters are made of artificial concrete. The platform is covered with granite blocks laid in 2010. Previously, it was covered with asphalt.
There is mention of a wooden bridge in this location from 1280. It was at first called the Old Bridge and later the Lower Bridge, in contrast to the Upper Bridge that was built in the location of the nowadays Cobblers' Bridge in the same century. It was also named the Špital Bridge after the nearby poorhouse, which was established in the early 14th century. It was built anew in 1657 after a fire.
In 1842, the Lower Bridge was replaced by a new bridge designed by Giovanni Picco, an Italian architect from Villach, and named Franz's Bridge, in honor of Archduke Franz Karl of Austria. It also became known as the Franciscan Bridge. This bridge, opened on 25 September 1842, had two arches and a metal fence.
In order to prevent the 1842 stone arch bridge from being a bottleneck, the architect Jože Plečnik designed in 1929 the extension of the bridge with two footbridges at a sligh angle on each side of it. In collaboration with his student Ciril Tavčar, who drew the plans, he published the proposal in the same year in the journal Ljubljanski Zvon. Construction started in 1931 and continued until spring 1932. The bridge was opened for traffic in April 1932.
The bridge was renovated in 1992. Since 2007, all the three bridges have been part of the Ljubljana pedestrian-only zone.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.