A beautiful colonial city (though it's no Havana), and the safest area for tourists.  Incredible stone fortifications, the largest in the world, were built by the Spanish at a cost of 28 tons of gold--to protect the gold and slave trade that sailed from here.

Diving for coins tossed from tourist boats,  Bahia de Cartagena.

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Soldiers in full battle gear are a common sight in the richest parts of the old city.