The Citadel, South West and South East Casemates

THE CITADEL, SOUTH WEST AND SOUTH EAST CASEMATES

Listed on the National Heritage List for England. Search over 400,000 listed places

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Overview

Heritage Category:
Listed Building
Grade:
II*
List Entry Number:
1203117
Date first listed:
17-May-1993
List Entry Name:
The Citadel, South West and South East Casemates
Statutory Address:
THE CITADEL, SOUTH WEST AND SOUTH EAST CASEMATES
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Location

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Official list entry

Heritage Category:
Listed Building
Grade:
II*
List Entry Number:
1203117
Date first listed:
17-May-1993
List Entry Name:
The Citadel, South West and South East Casemates
Statutory Address 1:
THE CITADEL, SOUTH WEST AND SOUTH EAST CASEMATES

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.

Understanding list entries

Corrections and minor amendments

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.

Understanding list entries

Corrections and minor amendments

Location

Statutory Address:
THE CITADEL, SOUTH WEST AND SOUTH EAST CASEMATES

The building or site itself may lie within the boundary of more than one authority.

District:
Dorset (Unitary Authority)
Parish:
Portland
National Grid Reference:
SY6933573503

Details

SY6973
969-1/3/175

PORTLAND
THE CITADEL, The Verne
(South side)
The Citadel, SW and SE Casemates

GV
II*

Military casemates. c 1860. Probably by Capt. W. Crossman, RE,
general designer of The Citadel. Rusticated Portland ashlar,
turf and grass roof. Two long and one shorter runs of
continuous casemates to the south-west and south-east edge of
the Citadel enclosure. The structure is backed by high earth
mounds, standing above the very deep surrounding ditches, so
that only one face is exposed; the short south casemate,
connecting the two longer units, lies immediately adjacent to
the South Entrance (qv). Continous high wall in rusticated
ashlar, with heavy weathered coping on deep moulding, carrying
square stacks to flat pyramidal cappings, above 3-course plain
band and a string with bold cavetto-mould immediately above
stepped voussoirs to main arches. Segmental arches carried to
broad responds, over a Diocletian window. Main opening has
bold projecting square porch with tall rectangular light to
face, and heavy door under transom-light on return. The porch
is flanked by a tall rectangular light each side; many of the
porches missing at time of survey (May 1991).The SW casemate
has, returning at right angles to the N, a length of plain
stepped walling to a heavy capping then 35 arches; the S run
has 10, and the SE has 17. On the splayed length of wall
connecting SW and S casemates is a large segmental opening
over a flight of stairs to heavy stone balustrades, flanked by
paired doors under fanlights in rusticated surrounds with
voussoirs set within segmental arches linked with the centre.
Each casemate has a deep, narrow compartment enclosed and
vaulted in Portland stone.
This remarkable run of structures enclosing the main central
area of The Citadel is vigorously detailed, and on a
charactersitically grand scale, lying above the very deep
surrounding Ditches, and modelling the landscape in views from
many parts of The Island.

Listing NGR: SY6933573503

Legacy

The contents of this record have been generated from a legacy data system.

Legacy System number:
382029
Legacy System:
LBS

Legal

This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.

Ordnance survey map of The Citadel, South West and South East Casemates

Map

This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 07-Jul-2026 at 23:05:29.

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© Crown copyright [and database rights] 2026. OS AC0000815036. Use of this mapping is subject to Terms and Conditions.

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.

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