The National Smalspoormuseum (Narrow-Gauge railway) offers a look at a huge variety of transportation forms, from trucks to steam locomotives, and from cars to other passenger vehicles. A highlight of this museum is the refurbished and carefully restored steam engines, available for inspection on the premises. Employees are happy to explain how everything works. You can even ride a steam engine around Valkenburg Lake.

They offer a "Kerstritten" on Thursday and Friday, 22 and 23 December (no reservations necessary) and an "Oliebollenritten" on Thursday and Friday, 29 and 30 December (reserve online).

The museum is located at J.Pellenbargweg 1 in Valkenburg. You can get there easily by car (it's right off the A4). Via public transportation, you can travel there from Leiden Central Station or Den Haag Central Station with bus 43 (stop: Haagse Schouw). If you prefer a longer walk, then get out at de Vink station (a few stops from Leiden Central), and the museum is a 20 minute walk.