What if a boundary you cannot see still shapes the places around you?

Pembrokeshire is crossed by an invisible cultural and linguistic boundary known as the Landsker Line. For centuries, it has marked a broad divide between predominantly Welsh-speaking communities to the north and east and English-speaking communities to the south and west.

Residents of Kensington Court and De Clare Court explored the history of this unusual boundary through local place names, dialect, castles and stories. They visited museums, historic sites and Pembrokeshire Archives, discovering how centuries of migration and settlement have shaped the language and identity of the county.

At Kensington Court, residents each ‘adopted’ a Norman castle along the Landsker Line and brought their research together in an illustrated map, revealing a boundary that cannot be seen on the landscape.

At De Clare Court, people explored Pembrokeshire’s distinctive dialect and the identities of different towns and villages. Their discoveries became an interactive quiz, inviting others to match clues with places across south Pembrokeshire.

Together, the map and quiz reveal a county shaped by language, movement and history – and invite us to look again at the invisible boundaries that can shape our sense of place and belonging.

Click the images to explore the artwork and test your knowledge with the Landsker Line quiz.