Grote Waterpoort, Delfzijl

Delfzijl has always been vulnerable to flooding. Even now, the denominations in the dike have to be closed from time to time to keep water away from the city.
The Waterpoort was originally a fortress gate, but was rebuilt in 1833. At the top of the gate you see a crown with a W. This is a reminder of King Willem I, who was then in charge. On the harbor side of the gate is a mark that indicates the water level during the storm surge on February 16, 1962. However, the highest water level so far was measured in 2006: 4.83 meters above sea level.
visitgroningen.nl/nl/locaties/15137983/grote-waterpoort

This gate to protect against high water

The Waterpoort is one of two water gates in Delfzijl.
During high tide, the gate can be closed with a metal gate to protect the city from the masses of water.
The gate was built in 1833 to replace an older gate from 1715 and is also called Grote Waterpoort.
On the harbor side of the gate there is a stone with an inscription commemorating the spring tide of 1962.
Since the water gate was modernized in 1970, it can still be used during floods.(Source: visitwadden.nl)