This article foregrounds the cultural and spiritual significance of Lihou, a small tidal island within the Bailiwick of Guernsey in the Channel Islands (part of the British Isles). While Lihou has often been overlooked in scholarly discourse, this study reveals the island’s rich history intertwined with spirituality, folklore and geographical features. Applying a multi-sited archipelagic framework, the article examines Lihou’s cultural connections and geographic comparisons to other islands and sacred sites on both sides of the English Channel, highlighting its role as a location of religious exception and holiness. Drawing on insights from the field of island studies and archipelagic theory, the article explores how Lihou forms part of a broader network of interconnected sacred islands, transcending its physical boundaries. By contextualising Lihou within this framework, the article contributes to a deeper understanding of small island cultures and their spiritual significance, emphasising the importance of multi-sited geographical perspectives for island studies.