Mausoleum is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 29 April 1952. Mausoleum.

Mausoleum

WRENN ID
unlit-lime-nightshade
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
29 April 1952
Type
Mausoleum
Address
Mausoleum, Glynllifon, Llandwrog
OS grid reference
SH 465 547
Coordinates
53.06795, -4.29145
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a Grade II listed mausoleum featuring a circular tower constructed from coursed local rubble. The base of the tower is slightly battered and it narrows above the cornice at the ground floor. At the top, there are three dressed stone windows with segmental arches, and to the south, there is a dressed stone gateway with a 4-centred arch.

Inside, there is a brick-vaulted central lobby that includes a winding stone staircase on the left. To the right, a round-headed arch leads into a flat-roofed perimeter passage, which connects to a cruciform chamber on the ground floor. Although the original design intended for a second-floor chapel, it now features a plain octagonal chamber with a groined vault.

Local climate

Mausoleum sits in one of the wettest parts of the UK, with an average of 1,370 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.

It experiences an average of 20 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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Nearby listed buildings

  1. Boundary Wall to Glynllifon Park Grade II 479 m
  2. Outer Defensive Wall to Fort Williamsburg Grade II* 560 m
  3. Barracks at Fort Williamsburg Grade II* 570 m
  4. Armoury at Fort Williamsburg including attached screen walls Grade II* 584 m
  5. Former reservoir on hill to north-east of Fort Williamsburg Grade II 595 m
  6. Boundary wall to Glynllifon Park (that part forming Community boundary with Llandwrog) Grade II 620 m
  7. Gatehouse at Fort Williamsburg Grade II* 631 m
  8. Tunnel Passage at Fort Williamsburg Grade II* 646 m
  9. Tower at Fort Williamsburg Grade II* 664 m
  10. Magazine at Fort Williamsburg Grade II* 670 m