What do Amsterdam, Venice, and Reykjavik have in common? The answer is over-tourism. And not just over-tourism, but tourism so excessive that authorities in those cities (and many others) are looking at strategies to actively discourage visitors. Based on my personal experience in recent weeks, I want to add two names to the list of over visited places: Capri and Positano.

My advice to anyone planning to visit Capri is simple. Don’t go. By all means take a boat trip around the island and look at the pretty coves and rock formations, but under no circumstances dock at the main harbor and explore the main town. Even at low season, the place is choked with tourists who, undeniably with the best intentions, have destroyed what must have been a beauty a generation or two ago.

Positano, that most picturesque town, is well on its way to sharing the same fate as Capri. The streets climbing up from the port and small beach are lined with mostly average restaurants and uninteresting shops selling expensive tat to tourists. Just by being there, I felt I was hastening the demise of a place of stunning natural beauty.

Sorrento, Atrani, and, most of all, Ravello are a delight, but even those towns have to be visited early in the morning (and preferably at low season) before the hordes arrive. After a few days on the Amalfi coast, I was glad to leave and saddened by its gradual and inevitable desecration, to which I had unwittingly contributed.