Caer Gybi Roman Fort
Remains of a Roman fortlet in Holyhead, Anglesey, Wales.
Each edition grades its towns against each other only.

We list 3 places to visit inside Holyhead’s built-up area and one within 5 km of its edge. Among them are 2 forts and 2 museums. Within 1 km of the middle there are 3 of them. At 31 km, Caernarfon is worth the journey.
Close behind Caer Gybi Roman Fort are 2 museums and a fort.
FortCaer Gybi Roman Fortin town
MuseumHolyhead Maritime Museumin townMuseumMuseumHolyhead at Warin town
FortWorld War II Pillbox1.7 km outside town, to the southEach has a page of its own: what it is, who runs it, the weather month by month and what else is near it.
Furthest from the centre is World War II Pillbox, 3 km away.
The dashed line is Holyhead’s built-up area; orange marks its middle (where most people live). Numbers match the list below. © OpenStreetMap contributors · ONS built-up area 2022
Most are castles or historic places, 2 in all, ahead of museums or galleries (2).
Green: inside Holyhead. Grey: within 5 km of its edge.
The 3 inside Holyhead come first, then one more within 5 km of its edge.
Remains of a Roman fortlet in Holyhead, Anglesey, Wales.
Maritime museum in Holyhead, North Wales, United Kingdom.
Grade II listed building in Anglesey. Located on a rocky promontory to the rear (N) of the Trearddur Bay Hotel, set back from the N side of Lon Isallt.
The 3 inside Holyhead come first, best known first; then the places within 5 km, close and well known first. Churches and listed buildings are on the History page, not here.
53 listed buildings and 1 scheduled monument are on Holyhead’s History page → · Parks, footpaths and green space in Holyhead →
Best known of the 12 within reach is Caernarfon, at 31 km.
FortCaernarfon31 km southeast
Castle · CadwCastell Caernarfon30 km southeast
Castle · CadwCastell Biwmares / Beaumaris Castle37 km east
CathedralBangor Cathedral35 km east
CastleCastell Aberlleiniog37 km east
Castle · National TrustPenrhyn Castle37 km east
Fort · CadwCaernarfon Town Walls30 km southeast
CastleCaer y Belan29 km southeast
Art galleryOriel Môn22 km east
Heritage railwayLlanberis Lake Railway39 km southeast
AquariumAnglesey Sea Zoo29 km southeast
PierGarth Pier35 km eastPlaces well known beyond Holyhead (Wikipedia articles in several languages, published visitor counts, or a National Trust, English Heritage or Cadw property), close and famous first. Distances are straight lines from the middle of the town.
The best known inside Holyhead’s built-up area are Caer Gybi Roman Fort, Holyhead Maritime Museum and Holyhead at War. In all, 3 places to visit are mapped inside the town, and 1 more within 5 km.
2 museums and galleries are in or within 5 km of Holyhead: Holyhead Maritime Museum and Holyhead at War.
None within 5 km. The nearest well-known one on our list is Castell Caernarfon (Cadw), 30 km southeast.
Within 40 km: Caernarfon (31 km), Castell Caernarfon (30 km), Castell Biwmares / Beaumaris Castle (37 km), Bangor Cathedral (35 km).
Holyhead has 53 listed buildings, 2 of them Grade I. They are on its History page, from Cadw’s list, not repeated here.
From OpenStreetMap (museums, galleries, zoos, theme parks and attractions, castles, forts and abbeys, and historic houses and gardens that are open to visitors) and Wikidata (what each place is, who runs it, its website and visitor counts). A place counts for Holyhead when it is inside the ONS 2022 built-up area, and as nearby within 5 km of its edge. Opening times and prices are not shown: check the official site.
Places: OpenStreetMap (© OpenStreetMap contributors, Open Database Licence) and Wikidata (CC0), placed in the ONS 2022 built-up area (Open Government Licence v3.0). Visitor counts are the latest Wikidata gives, with their year.
Photos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.