Polish workers on Thursday moved a World War II-era German bunker weighing some 500 tons that was obstructing the construction of an expressway linking Warsaw and Gdansk, DPA reported.
Two cranes were used to move the massive war shelter in Witramowo, northern Poland. The bunker - one of the best-preserved structures of its kind in the country - was part of a 100-kilometre-long defense line built by Germans before the outbreak of World War II in 1939.
The bunker was moved some 50 metres in an operation that cost around 2 million zloty (723,000 dollars). Construction workers said it would have been much costlier to build an alternative route.
A provincial official for the conservation of monuments said the bunker could not be taken apart.