So did you identify where Picture Number 1 was taken?
At the River Ouse end of Marygate is Marygate Water Tower, sometimes known as Marygate Landing Tower. The tower walls have four cruciform slits, which have oillets to the arms. Mystery Picture Number 1 shows one of these cruciform slits.
Marygate Water Tower is part of the remains of the defensive precinct walls of St Mary’s Abbey, which survive on the north-west and north-east sides of the Abbey Precinct. The walls were erected in 1266, then raised, crenellated and extended in 1318. The Water Tower and St Mary’s Tower, at the other end of Marygate, were erected in 1324. A pedestrian arch was added beside the Water Tower circa 1836. The tower exterior is circular on plan, but the interior is hexagonal, with a single opening to each inner face. The Towers and The Abbey Walls are a Scheduled Ancient Monument.
