Heidenreichstein Castle
A moated Waldviertel castle standing in water, never taken in eight hundred years, with four corner towers.
Updated 21 October 2026
Heidenreichstein is a Wasserburg - a castle whose defence is water rather than height - built from the twelfth century on marshy ground in the flat northern Waldviertel, where there were no hills to use. It sits in a moat fed by the surrounding wetland with four round corner towers, thick curtain walls and a drawbridge, and it has never been captured in some eight hundred years, partly because the approach across soft ground defeated siege engines. The Kinsky family inherited it in 1961 and still own it. Inside, the rooms are shown by guided tour with medieval kitchens, the great hall, armour and the well; the fabric is unusually unaltered because the castle was never rebuilt in a later style, only maintained. Winter freezes the moat solid.
What you'll find
- A castle standing in water - a moated fortress on flat marshy ground.
- Four round corner towers - the curtain and towers essentially unaltered.
- Never captured - eight hundred years without a successful siege.
- Medieval interiors - kitchens, hall and well shown on the tour route.
When to go
May to October; closed over winter. Half a day.
Before you go
Guided tours only, at set times, in German. Privately owned with parts closed. The northern Waldviertel is remote and needs a car. The interior is cold even in summer.
Nearby
Gmünd and the Blockheide are south-west; the Czech border is north.
Key facts
Source: Wikidata, item Q491197, read on 18 October 2026.
What to pack for Heidenreichstein Castle
Chosen from what this place is for. Tap a kit for the full checklist.
- Comfortable walking shoes - Sightseeing means kilometres of pavement and cobbles daily. Find on Amazon
- A slim anti-theft daypack - Zips that close properly; keep it in front in crowds and on transit. Find on Amazon
- A refillable water bottle - Many cities have public fountains; save money and plastic. Find on Amazon
- A light layer + compact umbrella - For museum air-con and a sudden shower. Find on Amazon
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