At the border between the prefectures of Grevena and Kozani, we can find Pasha bridge, constructed in 1806, that was an important passage over the river Aliakmonas. The Bridge had six arches and a length of over 100 metres, but it was blown up by the British on their retreat in 1941, to obstruct the advance of the German forces. The legend that follows it is similar to that of the Arta bridge; the story relates that the master builder had to build his wife in the foundations of the Bridge so that it became secure.