Travel back into time through east Groningen where the Bourtange fortress has stood still in time and where the ancient cannon booms as it did in the year 1742. Take a ride with the old locomotive on the Museumspoorlijn (Museum Railway Line) and visit the Ter Apel monastery to see how the Crutched Friars lived. The construction of the fortress was initiated in 1580, but reached its full magnitude in 1742. The pentagonal shape of the fortress was designed as the ancient and original plan prescribed. Also the officer houses, soldier barracks, the gunpowder storage and a sinister instrument of torture are worth a visit.