From this week walkers doing Italy's famous Cinque Terre in Liguria in northwestern Italy will only be allowed to set out in one direction along the narrow paths that link the five former fishing villages.
The measure has been introduced as Italy braces for huge numbers of tourists over a long weekend that revolves around April 25, commemorated as Liberation Day, when the country was freed from the Fascist regime and the Nazi occupation.
Millions of Italians will also be on holiday, adding to the overcrowding expected from foreign tourists, many of whom have the Cinque Terre on their bucket lists.
Doing the walk the other way round will not be permitted. There will be checkpoints manned by police and national park officials.
Italy has been grappling with overtourism, as Venice becomes the first city in the world to introduce an entrance fee for tourists - 15 Euro.
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