De Vink railway station

On 9 September 1926, a passenger train was derailed near Voorschoten, Netherlands due to defective track. Four people were killed and 30 were injured.

The Corbulotunnel is a road tunnel in the Netherlands, located near Leiden. It forms part of the N434 provincial road, connecting the A4 and A44 motorways. The tunnel opened to traffic on 5 July 2024 after several years of construction and delays. It is approximately 2.5 kilometres long and is intended to improve regional connectivity and reduce traffic congestion in and around Leiden. The tunnel is part of the RijnlandRoute, a major infrastructure project designed to improve traffic flow in the Holland Rijnland region, particularly around Leiden and Katwijk. The N434, which includes the tunnel and a section of sunken roadway, is expected to handle around 9 million vehicles annually and aims to enhance accessibility and livability in the region. The project was approved in 2014, with construction beginning in 2017. The work involved around eighty specialists from nineteen countries, including divers and tunnel experts. The tunnel consists of two tubes, each approximately 2,250 metres long and carrying two lanes of traffic. The deepest point lies more than 30 metres below sea level. Construction was carried out using a specially designed tunnel boring machine. The Corbulotunnel was built between 2017 and 2024 by a contractor consortium on behalf of the province of South Holland. The tunnel and the adjacent sunken road were designed to minimize impact on the surrounding environment. The tunnel boring machine used for construction had a diameter of nearly 11 metres and simultaneously excavated soil and installed prefabricated concrete segments to form the tunnel structure. The total cost of the project was approximately €1 billion. The tunnel was named after the Roman general Corbulo, who ordered the construction of a canal connecting the Rhine and the Meuse in the same region in ancient times. Kunstwerk 17 was named Corbulotunnel.

Voorschoten (Dutch pronunciation: [ˈvoːrsxoːtə(n)] (listen)) is a village and municipality in the western Netherlands, in the province of South Holland. It is a smaller town in the Randstad, enclosed by the cities of Leiden, Wassenaar and The Hague. The municipality covers an area of 11.56 km2 (4.46 sq mi) of which 0.42 km2 (0.16 sq mi) is covered by water. The town is relatively affluent, and the majority of Voorschoten's population are commuters, generally to either the Hague or Leiden. Despite the fact that it is situated in one of the most densely populated areas in the Netherlands, and, indeed, the world, the town retains a strong, independent identity and village-like atmosphere. Several buildings of historical importance are situated in Voorschoten. For example, the old Castle Duivenvoorde, and the Manor Vredenhof - rebuilt by Diederik Jansz. Graeff, and until the 18th century in the hands from the De Graeff family - are located in or near Voorschoten. The town's proximity to the Hague, as well as the presence of the British School in the Netherlands in the town, and the American School of the Hague in nearby Wassenaar, means that Voorschoten has a large community of expatriates, particularly British nationals.Floris V of Holland granted Voorschoten market rights in 1282. In recent years, the settlement has seen considerable expansion, with the addition of several new areas of housing, such as Starrenburg, Krimwijk II and, most recently, Voorsche Park. The town benefits from excellent sporting and recreational facilities, including hockey, football and baseball clubs, a tennis club, a swimming pool and a golf course. There are a number of churches located throughout the town, the two most striking of which are the main church, located in Voorschoten's historic centre, and the St. Laurentius Church, located in the north of the town.

The Vijf Meihal (English: 5 May Hall) is a complex located in the Dutch city of Leiden. It has been used as a sports arena since 1968. In 2006 it became the home of Zorg en Zekerheid Leiden, a Dutch professional basketball team. Until 2010 the Vijf Meihal had a capacity of 700 people. This was expanded to 2,000 people in 2010. The expansion cost somewhere around 500,000 euros and did allow Zorg en Zekerheid Leiden to play in European competitions.The Dutch national basketball team played a EuroBasket qualification match in the Vijf Meihal on 16 August 2013. The Netherlands played against Portugal and won the match, 71–53. Later the Vijf Meihal became the main arena of the national team. The complex is nicknamed De Schuur (English: The Barn) by ZZ Leiden fans.

ZZ Leiden Basketball, also known as Zorg en Zekerheid Leiden, is a basketball club based in Leiden, Netherlands. The club plays in the BNXT League, the domestic first tier league. Their home games are played at Vijf Meihal, which has 2,000 seats.ZZ Leiden has won the national championship four times, the NBB Cup three times, the Dutch Basketball Supercup three times as well. Leiden was a European Club Winner's Cup semi-finalist in 1980.

Stoomtrein Katwijk Leiden (formerly Stoomtrein Valkenburgse Meer, abbreviated SVM), is a 700 mm (2 ft 3+9⁄16 in) narrow gauge heritage railway line around the Valkenburgse Meer in the south of Katwijk, Netherlands. Although the name translates as Steam Train Valkenburg Lake, technically actually trams are used for the tourist attraction. Carriages are mostly remakes of early-20th century tram carriages, built by the Nederlandse Smalspoor Stichting (Netherlands Narrow-gauge Foundation) in Katwijk.

The Institute of Environmental Sciences (CML) is an institute of the Faculty of Science of Leiden University in the Netherlands. The main area of work is research and education in the multidisciplinary field of environmental sciences. In 2009 the tenured and non tenured staff consists of about 28 fte including 4,5 fte supporting staff. The interdisciplinary character is reflected in the various staff members' backgrounds, such as: ecologists, chemical engineers, agricultural engineers, physicists etc.

Janssen Vaccines, formerly Crucell, is a biotechnology company specializing in vaccines and biopharmaceutical technologies. It was formed when Johnson & Johnson acquired the Dutch biotech company Crucell based in Leiden and placed it in their pharmaceutical division.

Naturalis Biodiversity Center (Dutch: Nederlands Centrum voor Biodiversiteit Naturalis) is a national museum of natural history and a research center on biodiversity in Leiden, Netherlands. The museum, except the research facilities, was closed from September 2018 to mid 2019 due to renovations. Temporary exhibitions were held in the Pesthuis (historical Plague hospital), the former entrance building, during the renovations.Although its current name and organization are relatively recent, the history of Naturalis can be traced back to the early 1800s. Its collection includes approximately 37 million specimens, making it one of the largest natural history collections in the world.

The Corpus Museum is a human biology interactive museum, located near Oegstgeest in the Netherlands. Billed as "a journey through the human body", the museum provides both education and entertainment through a combination of permanent and variable collections. Opened in 2008 by Queen Beatrix, the museum is the world's first museum of its type.

University of Applied Sciences Leiden (abbreviated as UAS Leiden; Dutch: Hogeschool Leiden), is a vocational university in the western Netherlands, located in the city of Leiden. It currently has approximately 12,000 students, mainly studying towards associate and bachelor's degrees. The school also offers master's degrees in nursing and physical therapy.

The siege of Leiden occurred during the Eighty Years' War and the Anglo–Spanish War in 1573 and 1574, when the Spanish under Francisco de Valdez attempted to capture the rebellious city of Leiden, South Holland, the Netherlands. The siege failed when the city was successfully relieved in October 1574.