Ever heard of the Mayan site Comalcalco in today’s Mexico?
Completely built from burned red square clay bricks in the same size and shape as known from Romans. Mayan’s didn’t use burned bricks anywhere else. Also the architecture style is unusual for Mayan sites with some apparent Roman influence.
It’s discussed whether a small Roman expedition made it over the Atlantic and brought in the influence. The Atlantic trip, especially one way westwards is well possible with Roman ships due to the tradewinds and currents.
Some rare images not easy to find on the net (no fb account needed):
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www.facebook.com]
Some more common images:
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en.wikipedia.org])
If anyone is aware of further discussions about Roman influence, please add.