Originally founded by the Spanish in 1494, the city is said to have been laden with treasure and gold accumulated at sea. A pocket watch uncovered from the seabed in the 1960s confirmed the date and time of the earthquake as 11:43am on 7 June but many of the city’s mysteries are still shrouded by the sandy seabed.

Scuba divers can arrange permits and trips to explore the underwater archaeological zone, where previous excavations have yielded 16th and 17th century artefacts (pictured) and sunken galleons.

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