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Cof Cymru: National Historic Assets of Wales · Wales

Former Oil Store at Boston Lodge Railway Works

Penrhyndeudraeth, Gwynedd, Wales

A Grade II listed building in Boston Lodge, Penrhyndeudraeth, Gwynedd, designated on 3 August 1994.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Former Oil Store at Boston Lodge Railway Works, Penrhyndeudraeth, Gwynedd, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Listed building, Grade II
Broad class
Transport
Date of designation
3 August 1994
Locality
Boston Lodge
Community
Penrhyndeudraeth
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.91984, -4.10631
Cadw reference
14418

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1795 map "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

Historical maps covering this location

  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 119 Snowdon (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

The railway yard known as Boston Lodge is a large complex at the south-east end of The Cob, facing Porthmadoc across the Traeth Mawr. This building is at right angles to the Brass Foundry, at the centre of the site; adjoins Nos 1 & 2 Boston Lodge.

Boston Lodge was originally one of the two barracks built for the workforce constructing The Cob in 1808-11, William Madocks' major engineering project. It was widened in 1836 by the addition of the lower Cob to carry the new road and the original embankment was then converted to carry the new Ffestiniog Railway which was built as a narrow-gauge slate railway to connect the quarries at Blaenau Ffestiniog with the harbour at Porthmadoc. Boston Lodge was used to provide stabling for the horse-drawn railway but following introduction of steam locomotives in 1863, which in itself was a technological achievement given the gradients on this line, it was enlarged and converted into a locomotive works and yard; it was most unusual for such a small railway to be building its own carriages and locomotives. Boston Lodge retains this use because although the line was closed in 1946 it reopened in 1954 as a private steam railway. It is widely recognised as one of the world's historic railways and is believed to be the oldest surviving railway company. The name of the works derives from the fact that Madocks was MP for Boston, Lincolnshire. Mid C19; this is probably amongst the earlier ranges at Boston Lodge, contemporary with the Brass Foundry, Smithy etc.

Single-storey, built of local slatey rubble with slate roof and wide eaves, bracketed to gable end. The north front has boarded door to left and 2-light timber window to right with transom and pointed arched heads to the glazing. The west gable end has small blocked roundel and projecting masonry at the north corner which originally formed the springing for an arch that formerly spanned the railway line at this point.

Listed as part of this especially complete example of a C19 railway engineering works which has important historical associations with the Ffestiniog Railway.

Group value with other listed items at Boston Lodge.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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