A view of the shopping street in the innercity of Amersfoort, a municipality and the second largest city in the province of Utrecht in central Netherlands. The city has a well preserved and protected medieval centre. The "Tower of the Lady" you see in the background is one of the tallest medieval church towers in the Netherlands at 98 metres (322 ft) and dates from 1444.
The tower is so tall you see it everwhere when walking in the city.
When standing in front I could hardly manage to make a picture of the complete tower. The church was destroyed by an explosion in 1787 but the tower survived.
It is now the reference point of the RD coordinate system , the coordinate grid used by the Dutch topographical service: the coordinates are (155.000, 463.000) You have to read the link to understand this I think, I don't I am afraid.
This line in the pavement in front of the tower is pointing to the Zero point in the middle of the tower from the measurement of the land registry.