A rare, fully intact sword from the 10th century has been found at the bottom of a lake. The sword which is decorated with a cross and has the remains of its leather scabbard, was discovered along with artefacts dating back to the times of the first Piast by archaeologists exploring Lednica Lake, between Poznan and Gniezno... The younger bridge dates back to the turn of the 13th and 14th centuries, while the older to the beginning of the 10th. The wood used for its construction was cut down in the years 913 and 914... Underneath the bridges' remnants, the...