Was Venice born on 25 March 421?
The Chronicon Altinate, one of the oldest manuscripts that explain the history of Venice, states that the first settlement in Rialto (from the Latin Rivus Altus, means "deep channel") dates back to 421 AD.
The document is from the eleventh century and it does not have absolute historical value but it is said that the 25th of March 421 was laid the foundation stone of the San Giacomo Church ("San Giacometo") in Rialto.
