Gardens · South Wales
Dewstow House
In or near Caerwent.
Dewstow House — a garden in wales-south, United Kingdom.

Robin Drayton — CC BY-SA 2.0 via Wikimedia Commons licence
Plan your visit
- Typical visit
- 1 h–2.5 h
- Best time of year
- Spring & summer (Apr–Sep)
- Nearest railway station
- Severn Tunnel Junction · 1.4 km
- Family-friendly
- Dog-friendly
Getting there & planning your visit
To visit Dewstow House, the nearest railway station is Severn Tunnel Junction, located 1.4 km away. The postcode for sat-nav is NP26 5AH. Entry details are not specified, so please check ahead for accessibility information.
About
Dewstow House is a garden of interest in wales-south, United Kingdom — drawn from open-data sources for visitor reference. See the linked Wikipedia article for the full description.
Photo gallery
Heritage listing
http://cadwpublic-api.azurewebsites.net/reports/listedbuilding/FullReport?lang=en&id=23039
From Cadw under OGL v3.
Protected designations
- Site of Special Scientific Interest: Severn Estuary SSSI
Designations sourced from Natural England open data under OGL v3.
From the Wikipedia article
Dewstow House, Caldicot, Monmouthshire, Wales, is an early nineteenth century villa in a Neoclassical style. The house is notable as the site of "one of the strangest gardens in Wales." The building itself is plain; described by architectural writer John Newman as a "simple three-bay villa", it has extensive views over the Severn Estuary. The house is a Grade II listed building, while the garden is listed at the highest grade, Grade I, on the Cadw/ICOMOS Register of Parks and Gardens of Special Historic Interest in Wales.
Excerpt from Wikipedia under CC BY-SA 4.0. See the source article linked in Sources below.
Background
History
Dewstow House is a simple, two-storey villa. It is notable for its "network of very rare and unusual underground gardens" constructed in the late nineteenth and early twentieth centuries. Comprising "underground passages and top-light chambers with artificial rock-work and stalactites," the garden structures have three separate Grade II* listings as a result of their importance. After the death of the garden's creator, Harry Oakley, in 1940, the gardens were gradually abandoned. In the 1960s, during the construction of the M4 motorway and the Severn Bridge, soil from these sites was used to fill in the grottoes and pools. The gardens were rediscovered, excavated and restored at the…
Sourced from Wikipedia under CC BY-SA 4.0.
- Coordinates
- 51.5963, -2.7696
- District
- Monmouthshire
- Parish
- Caerwent
- Postcode
- NP26 5AH
- Parliamentary constituency
- Monmouthshire
- Established
- 1800
- Nearest railway station
- Severn Tunnel Junction — 1.4 km
- Official site
- www.dewstowgardens.co.uk
Sources
- wikidata: Q5268296 (CC0)
- wikipedia: Dewstow House (CC BY-SA 4.0)
Other places nearby

Dewstow Hidden Garden and Grotto
Gardens · 0.1 km

Old Windmill, Rogiet
Windmills · 1.4 km

Llanthony Secunda Manor
Manor houses · 1.4 km

Caerwent Motte
Literary houses · 1.5 km

Castle Mound
Viewpoints · 1.5 km

Church of St Stephen and St Tathan (Tatheus)
Historic churches · 1.6 km

Venta Silurum
Museums · 1.6 km

Venta Silurum
Vineyards · 1.6 km

Caer-went Roman Town
Archaeological sites · 1.7 km

Church of St Mary, Rogiet
Historic churches · 1.7 km

Caerwent
Towns & cities · 1.7 km

classical Roman temple at insula VIII, Caerwent
Follies · 1.7 km
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Frequently asked questions
- Where is Dewstow House?
- Dewstow House is in South Wales, United Kingdom (postcode NP26 5AH), in the parish of Caerwent.
- What is Dewstow House?
- Dewstow House — a garden in wales-south, United Kingdom.
- How do I get to Dewstow House?
- The nearest railway station is Severn Tunnel Junction, about 1.4 km away. Drivers can use postcode NP26 5AH.
- When was Dewstow House built?
- Built or established in 1800.
- Who owns Dewstow House?
- Dewstow House is owned by Privately owned.
- Is Dewstow House a listed building?
- Dewstow House is officially recognised as II listed.
- Is Dewstow House a protected site?
- Yes — Dewstow House is part of the Severn Estuary SSSI Site of Special Scientific Interest.
- How do I get to Dewstow House?
- The nearest railway station is Severn Tunnel Junction, about 1.4 km away. Drivers can navigate to postcode NP26 5AH.