Amgueddfa Cymru – Museum Wales in the context of "National Slate Museum"

St Fagans National Museum of History (/ˈfæɡənz/ FAG-ənz; Welsh: Sain Ffagan: Amgueddfa Werin Cymru), commonly referred to as St Fagans after the village where it is located, is an open-air museum in St Fagans, Cardiff, Wales, chronicling the historical lifestyle, culture, and architecture of the Welsh people. The museum is part of the wider network of Amgueddfa Cymru – Museum Wales.

It consists of more than forty re-erected buildings from various locations in Wales, and is set in the grounds of St Fagans Castle, a Grade I listed Elizabethan manor house. In 2011 Which? magazine named the museum the United Kingdom's favourite visitor attraction.

National Museum Cardiff (Welsh: Amgueddfa Genedlaethol Caerdydd), formerly known as the National Museum of Wales, is a museum and art gallery in Cardiff, Wales. The museum is part of the wider network of Amgueddfa Cymru – Museum Wales. Entry is kept free by a grant from the Welsh Government. In February 2025 the museum announced a temporary closure due to maintenance funding issues.

The National Wool Museum, located in Drefach Felindre, Llandysul, Carmarthenshire, is part of Amgueddfa Cymru – Museum Wales.

The National Roman Legion Museum (Wales) (Welsh: Amgueddfa Lleng Rufeinig Cymru) is a museum in Caerleon, near Newport, south-east Wales. It is one of three Roman sites in Caerleon, along with the Baths museum and the open-air ruins of the amphitheatre and barracks. It is part of the wider network of Amgueddfa Cymru – Museum Wales.

The National Waterfront Museum, Swansea or NWMS (Welsh: Amgueddfa Genedlaethol y Glannau) is a museum in Swansea, Wales, forming part of Amgueddfa Cymru – Museum Wales. It is an Anchor Point of ERIH, The European Route of Industrial Heritage.