Wat Maniwong is a Buddhist temple in Nakhon Nayok, with an artificial cave, known as the ‘Jewelled Palace in the Great Subterranean Realm of the Naga King’ that offers a visual representation of the mythical realm of the Naga.

The temple's name, meaning ‘Temple of the Jewel Lineage’, alludes to the Naga, mythological serpents believed to inhabit subterranean realms, caves, and aquatic domains where they guard precious jewels and sacred treasures.