Ruins · Alphen aan den Rijn · Updated on 1 November 2026.
Kasteel Groot Poelgeest is a ruin in Alphen aan den Rijn, South Holland. This place has a story in the app. Within 290 m you'll find a water point and a bench.
Story · Kasteel Groot Poelgeest
You're standing at what remains of Groot Poelgeest, near Koudekerk aan den Rijn. A round moated castle once stood here. Today only one of its towers is left, along with a coach house from 1648. Try to picture the rest, surrounded by water.
Read the whole story in the Outdoor Pitstop app: check in at this place and it is yours (with Pro; new users are Pro for the first 4 weeks).
7 photos from Wikimedia Commons. In the app you add your own photo when you are there.
The nearest pitstop of each kind within 1 km, as the crow flies. No public toilet, bike pump or food stand within 1 km.
50 well-known points of interest nearby, those with an audio tour first.
Hear the story of Rijksmuseum Boerhaave on the spot with the app
Yes: a water point at 290 m.
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