South Portal of Welwyn Tunnel 300 Metres North of Welwyn North Station
SOUTH PORTAL OF WELWYN TUNNEL 300 METRES NORTH OF WELWYN NORTH STATION, HARMER GREEN LANE
Listed on the National Heritage List for England. Search over 400,000 listed places
Overview
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1385392
- Date first listed:
- 04-Oct-2000
- List Entry Name:
- South Portal of Welwyn Tunnel 300 Metres North of Welwyn North Station
- Statutory Address:
- SOUTH PORTAL OF WELWYN TUNNEL 300 METRES NORTH OF WELWYN NORTH STATION, HARMER GREEN LANE
Have you got a photo to share?
Join the Missing Pieces Project. We want you to share your photos and memories.
Location
Location of this list entry and nearby places that are also listed. Use our map search to find more listed places.
Use of this mapping is subject to terms and conditions .
This map is for quick reference purposes only and may not be to scale.
What is the National Heritage List for England?
The National Heritage List for England is a unique register of our country's most significant historic buildings and sites. The places on the list are protected by law and most are not open to the public.
The list includes:
 |
Buildings |
 |
Scheduled monuments |
 |
Parks and gardens |
 |
Battlefields |
 |
Shipwrecks |
Images of England Project
- Date:
- 2007-06-29
- Reference:
- IOE01/16732/02
- Rights:
- © Mr A. Gude. Source: Historic England Archive
Local Heritage Hub
Unlock and explore hidden histories, aerial photography, and listed buildings and places for every county, district, city and major town across England.
Discover moreOfficial list entry
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1385392
- Date first listed:
- 04-Oct-2000
- List Entry Name:
- South Portal of Welwyn Tunnel 300 Metres North of Welwyn North Station
- Statutory Address 1:
- SOUTH PORTAL OF WELWYN TUNNEL 300 METRES NORTH OF WELWYN NORTH STATION, HARMER GREEN LANE
The scope of legal protection for listed buildings
This List entry helps identify the building designated at this address for its special architectural or historic interest.
Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.
For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.
The scope of legal protection for listed buildings
This List entry helps identify the building designated at this address for its special architectural or historic interest.
Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.
For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.
Location
- Statutory Address:
- SOUTH PORTAL OF WELWYN TUNNEL 300 METRES NORTH OF WELWYN NORTH STATION, HARMER GREEN LANE
The building or site itself may lie within the boundary of more than one authority.
- County:
- Hertfordshire
- District:
- Welwyn Hatfield (District Authority)
- Parish:
- Welwyn
- National Grid Reference:
- TL2476815706
Details
TL 21 NW
77/2/10050
04-OCT-00
WELWYN
HARMER GREEN LANE
(West side)
South Portal of Welwyn Tunnel, 300 metres north of Welwyn North Station
II
Railway Tunnel Portal. 1849-50, for the Great Northern Railway, engineered by William and Joseph Cubitt and built by Thomas Brassey. Sandstone ashlar.
Semi-circular arch with dressed keyed surround. Cornice and parapet. Flanking towers which rise clear of the centre but are capped in a similar fashion.
This portal has strong group value with the adjacent Welwyn North Station (qv).
History: This line was opened by the GNR in 1850 and was engineered by William and Joseph Cubitt and built by Thomas Brassey.
References: O.S.Nock, The Great Northern Railway, Ian Allan, 1974. C.Awdry, Encyclopaedia of British Railway Companies, Patrick Stephens Limited, 1990, p 134.
Listing NGR: TL2476815706
Legacy
The contents of this record have been generated from a legacy data system.
- Legacy System number:
- 485854
- Legacy System:
- LBS
Sources
Books and journals
Nock, O S, The Great Northern Railway, (1974)
Awdry, C, Encyclopaedia of British Railway Companies, (1990), 134
Legal
This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.
Map
This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 11-Jun-2026 at 07:42:58.
Download a full scale map (PDF)End of official list entry
All text content is available under the Open Government Licence v3.0 , except where otherwise stated. Any supplied maps are © Crown Copyright [and database rights] 2026 OS AC0000815036 and may not be reproduced without permission.