Wassenaar

Duinrell is an amusement park situated in Wassenaar, Netherlands. Its main character is Rick the Frog. It also contains a caravan park and a camp-site. A variety of accommodation is also available including lodges, tents and static caravans. Bike and kart hire is available. The park has its own shop. Duinrell has been critically acclaimed for its attraction park with swimming pool (the Tikibad), which has the longest waterslides in the Netherlands. The pool is open till 22:00 on most days.The park is located on the estate of the counts Van Zuylen van Nijevelt.

Falcon is a steel roller coaster at the amusement park Duinrell, located in Wassenaar, Netherlands. The roller coaster is a Gerstlauer Euro-Fighter model coaster which was opened to the public on 14 May 2009. At 97 degrees, Falcon has a steeper-than-vertical drop, and the steepest drop of any roller coaster in the Netherlands.

Kikkerachtbaan (Frog Roller Coaster) is a steel roller coaster in the Dutch amusement park Duinrell, which was opened in 1985, it was one of the first attractions in Duinrell.

Dragonfly is a steel roller coaster in the Dutch amusement park Duinrell.

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.

Huize Ivicke is a monumental building in Wassenaar, the Netherlands. Constructed in 1913 for A. F. J. van Hattum, it is a replica of the Eremitageslottet hunting lodge in the Jaegersborg Dyrehave in Denmark. It was inhabited until the mid-1980s, when it became offices. Since 2000, it has been owned by speculator Ronnie van de Putte, known as the "Slum King of the Netherlands" (Krottenkoning van Nederland). He refuses to renovate the building, despite its monumental status. Heritage groups warned the local municipality in the late 2010s that the villa was severely dilapidated and it was placed on a list of the fourteen most threatened monuments in Europe. It is currently the subject of an intense dispute over emergency renovations and was squatted in 2018, by people wanting to carry out essential repairs. The house, the formal garden, the gate and the playhouse are all national monuments.

On 4 April 2023, a freight train and a passenger train collided with construction equipment obstructing the line at Voorschoten, South Holland, Netherlands. The passenger train was derailed. The operator of the crane was killed and 30 people were injured, 19 of whom were hospitalized.

Voorschoten is a railway station in Voorschoten, Netherlands. The first station opened on 1 May 1843 on the Amsterdam–Rotterdam railway. A new station building opened in 1886 and was closed on 17 September 1944. The station re-opened in 1969 and a hexagonal shaped station building opened. A new station was opened in 1995. The train services are operated by Nederlandse Spoorwegen.

Rosenburgh Castle or Rosenburg was a castle located in today's Voorschoten, the Netherlands. In the early 1700s, it was replaced by a manor which was demolished only a few years after its construction. Rosenburgh Castle was the center of a significant siege in 1351.

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.

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.