Thủy Trung Tiên Temple, once known as Cẩu Nhi Temple, rests on a quiet, tree-lined island on Trúc Bạch Lake, just north of Hanoi’s West Lake. Modest in size but heavy with history, the temple dates back over 1000 years and is one of the capital’s oldest surviving spiritual sites. Few visitors realise it’s built on the remnants of a forgotten cult, one centred on the worship of a dog.