Stoomtrein Katwijk Leiden

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.

De Vink is a railway station in the Netherlands. It is located near the former hamlet of De Vink, currently a part of Leiden. The station re-opened in 1985. It is wedged in between the city of Leiden and the neighbouring town of Voorschoten. The tracks in the direction of The Hague are on Leiden ground. The tracks in the direction of Leiden are on Voorschoten ground. Because of this, it is currently the only railway station in the Netherlands not to feature the name of the city it is located in.

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

Valkenburg ([ˈvɑlkə(m)bʏr(ə)x] (listen)) is a village and former municipality in the province of South Holland, in the western Netherlands. Valkenburg is now part of the municipality Katwijk and had a population of 3,900 in 2006.On 1 January 2006, Valkenburg and Rijnsburg were merged into the municipality of Katwijk. The former municipality of Valkenburg had about 3878 inhabitants (1 June 2005) and a surface area of 15.74 km2 (6.08 sq mi) of which 0.23 km2 (0.09 sq mi) is water. On the second Wednesday in September there is a horse market, the oldest in the Netherlands. 2010 marked its 1066th year of operation. The former Valkenburg Naval Air Base, which was situated here since 1936, was closed in 2006.

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.

Praetorium Agrippinae was a Roman settlement in the province of Lower Germania, in the area of the Cananefates, located in modern-day Valkenburg, Netherlands. It was an army encampment (Lat.: castellum) on the Old Rhine (at the time the major branch of the river Rhine), on the northern border of the Roman Empire, the limes. Praetorium Agrippinae is mentioned on the Tabula Peutingeriana between the castella of Matilo in the east and Lugdunum Batavorum to the west.

The American School of The Hague is an international school located in Wassenaar, the Netherlands. Students aged between 3 to 18 years old, who represent up to 80 nationalities, with 28 percent American and 15 percent Dutch nationals.

Valkenburg Naval Air Base (Dutch: Vliegkamp Valkenburg) (IATA: LID, ICAO: EHVB) is a former air base located just south of Valkenburg, which is part of Katwijk and close to the city of Leiden, that was used by the Royal Netherlands Navy until 2006, being their base for the Lockheed P-3 Orion aircraft. The Orions were sold to Germany and Portugal, resulting in the closure of the air base. Though officially closed as an airport, it still sees limited use for special events and by gliders and occasionally small piston aircraft, most from the local flying club Aeroclub Valkenburg. Current plans are to use the area for housing development, but part of the former air base may remain in use for glider flying.

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.

Rijnsburg (Dutch: [ˈrɛinzbʏr(ə)x] (listen)) is a village in the eastern part of the municipality of Katwijk, in the western Netherlands, in the province of South Holland. The name means Rhine's Burg in Dutch.

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.

Het Rijnlands Lyceum Oegstgeest (informally RLO) is a secondary school in the town of Oegstgeest in South Holland, founded in 1956.Het Rijnlands Lyceum Oegstgeest is part of the Rijnlands Lyceum Foundation, which also contains other schools in the region, including the International School of The Hague and the European School of the Hague, and formerly the Rijnlands Lyceum Dubai. The school building was designed by Rudi Bleeker, and the newly built wing from 2004 was designed by Dirk Jan Postel.RLO alumni include many significant Dutch political or public figures (Including Cabinet minister Jet Bussemaker and current Deputy Prime Minister of the Netherlands Kajsa Ollongren).