Alatopetra Bridge (also known as Prosvorou Bridge) crosses Venetiko River which is just 5 km northwest of Venetiko village. This place is inaccessible by car but its beauty is outstanding as it is the meeting point of two rushing rivers of opposite directions. The bridge has been declared a historical monument by ministerial order. Its construction dates to the 19th century. It used to be the only road connecting the region with Grevena. The stone bridge is 3.45 meters wide, made of rectangular stones hewn from sandstone.