Leiden ( LY-dən, Dutch pronunciation: [ˈlɛidə(n)] ; in English and archaic Dutch also Leyden) is a city and municipality in the province of South Holland, Netherlands. The municipality of Leiden has a population of 127,046 (31 January 2023), but the city forms one densely connected agglomeration with its suburbs Oegstgeest, Leiderdorp, Voorschoten and Zoeterwoude with 215,602 inhabitants. https://en.wikipedia.org/wiki/Leiden