Grade I listed buildings in Gwynedd

There are 44 Grade I listed buildings in Gwynedd.

• Bangor University Main Arts (formerly University College of North Wales main building)
• Caernarfon Castle
  Castle
• Caernarfon Town Wall
  Defensive Wall
• Capel Jerusalem
  Chapel
• Capel Newydd
  Chapel
• Capel Newydd
• Capel Peniel
  Chapel
• Cathedral church of St Deiniol
  Cathedral
• Chapel of St Mary to N of Vaynol Old Hall
  Chapel
• Church of St Baglan
  Church
• Church of St Beuno
  Lodge
• Church of St Beuno
  Church
• Church of St Beuno, with attached Chapel of St Beuno
  Church
• Church of St Brothen
  Church
• Church of St Cadfan
  Church
• Church of St Cawrdaf
  Church
• Church of St Engan
  Church
• Church of St Gwynhoydl
  House
• Church of St Gwynhoydl
  Church
• Church of St Hywyn
  Church
• Church of St Iestyn
  Church
• Church of St Mary
  Church
• Church of St Mary
  Town House
• Church of St Peblig
  Church
• Cochwillan
  House
• County Court (former County Hall)
  Terrace
• County Court (former County Hall)
  Courthouse
• Criccieth Castle
  Castle
• Dinorwic Slate Quarry Workshops (Welsh Slate Museum Buildings)
  Workshop
• Dolbadarn Castle
  Castle
• Ffynnon Cybi and associated works
• Fort Belan
  Fort
• Glynllifon
  Country House
• Parish Church of Saint Mary and Saint Bodfan
  House
• Parish Church of Saint Mary and Saint Bodfan
  Church
• Parish Church of St Derfel
  Church
• Penarth-fawr
  House
• Penrhyn Castle
  Country House
• Police Station, including forecourt railings and gate piers
• Portmeirion Town Hall
  Town Hall
• Royal Welsh Yacht Club (also known as Porth yr Aur)
• Ruin of Abbey of St Mary
  Abbey
• Vaynol Hall
  House
• Vaynol Old Hall
  House