Verloren Toren in Nijmegen, Netherlands

In 2011, during sewer repairs, workers uncovered the foundations of a 15th-century city-wall tower. Research showed that this tower belonged to a previously unknown second city wall, which protected Nijmegen between 1400 and 1425. Because of this, the tower was named "the lost tower" (Verloren Toren). The tower was about 13 metres tall, with walls approximately 2 metres thick. Its south side, facing the open fields, had much deeper foundations than the north side, which faced the city. Because the tower’s remains were discovered at the planned entrance to a new underground parking garage, the foundations were moved 40 metres and preserved in the public bicycle parking beneath the square. The original location of the tower is marked in the square’s pavement, in front of Plein 1944 28.