There are three stones buried in the streets of Leiden, which aren’t just decoration, they actually mark the city’s medieval different districts. The stones not only function as a border between the districts, it was also the place where law was practised in public; which means that many punishments and executions were held here. The three stones all date from the 14th century.
The Blue Stone was part of the parish Rijnoever (translated Rhine Bank), on the south of the modern day city. Back then, this was a seperate town and parish. The Red Stone marked the area of Marendorp, the White stone marked area around the city’s fortified tower De Burcht.