Italy's national park and World Heritage site Cinque Terre has banned plastic bottles. Instead, visitors are invited to purchase a one-litre reusable metal bottle at the entrance to the park, or bring their own flask.
Three million people visit the Cinque Terre every year. In the month of August alone, around 400,000 plastic bottles are discarded in the park.
Many of them find their way down the cliffs to the beach and into the water. Others pollute the park itself.
This huge amount of plastic, a substance that takes a very long time to decompose, has led to fears that the park is being "buried" in garbage.
The Italian government plans to install water fountains throughout the park. These fountains will dispense both sparkling and still water. The first five will be in place next month.