The Kampung Laut Mosque stands in Kampung Laut, in Tumpat District, Kelantan, Malaysia. It is estimated to date from the fifteenth or the eighteenth century, but there is no confirming evidence. It was built in a traditional Malay style suited to the climate, similar to local houses. The original structure had four foundation pillars and a roof of palm fronds.
Between 1859 and 1900, under the Kelantan Sultanate, the mosque was expanded. It gained 20 pillars, a three-tiered roof, a muezzin tower, an attic and a water tank. It served as a meeting point for sultans and religious leaders and as a trading post.
The mosque survived the flood of 1926 but was severely damaged in the flood of 1966 and then repaired. It was handed to the Kelantan government in 1970.

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