Leiden Today


Today Leiden forms an important part of Dutch history. The end of the Spanish siege in 1574 is celebrated on 3 October by an annual parade, a day off, a fair and eating the traditional food of herring and white bread and hutspot. However, the most important piece of Dutch history contributed by Leiden was the Constitution of the Netherlands. Johan Rudolf Thorbecke (1798-1872) wrote the Dutch Constitution in April 1848 in his house at Garenmarkt 9 in Leiden.

Leiden has important functions as a shopping and trade center for communities around the city. The University of Leiden is famous for its many developments including the famous Leyden jar, a capacitor made from a glass jar, invented in Leiden by Pieter van Musschenbroek in 1746. (It was actually first invented by Ewald Georg von Kleist in Germany the year before, but the name "Leyden jar" stuck.) Another development was in cryogenics: Heike Kamerlingh Onnes (1913 Nobel prize winner in physics) liquefied helium for the first time (1908) and later managed to reach a temperature of less than one degree above the absolute minimum. Albert Einstein also spent some time at Leiden University during his early to middle career.

The two branches of the Old Rhine, which enter Leiden on the east, unite in the centre of the town. The town is further intersected by numerous small canals with tree-bordered quays. On the west side of the town, the Hortus Botanicus and other gardens extend along the old Singel, or outer canal. The Van der Werff Park is named after the mayor Pieter Adriaanszoon van der Werff, who defended the town against the Spaniards in 1574. The town was beleaguered for months and many died from hunger. According to legend van der Werff was accused by a frantic crowd of secretly hiding food reserves. He denied vehemently and to prove his sincerity offered to cut of his arm to serve as food for for those who nearly died from hunger. This made people back off, ashamed of their mistrust. The open space for the park was formed by the accidental explosion of a ship loaded with gunpowder in 1807, which destroyed hundreds of houses, including that of the Elsevier family of printers.