Bridge Plakas & swimming Arachthos river

Plaka Bridge is a 19th-century stone one-arch bridge (completed in 1866 under the supervision of the famous local builder Kostas Bekas ) in Greece, It is located at the borders of Arta and Ioannina prefectures, above the waters of Arachthos River. With its arch of 40 metres (130 ft) width and 17.61 m (57 ft 9 in) height, it was the largest one-arch bridge in the Balkans and the third largest one-arch stone bridge in Europe. Arachthos is a river in eastern Epirus. Its source is in the Pindus mountains, near the town Metsovo it is 110 km (68 mi) long.