The United Nations World Tourism Organization defines overtourism as:

"The impact of tourism on a destination, or parts thereof, that excessively influences perceived quality of life of citizens and/or quality of visitors experiences in a negative way."

In essence, to facilitate sustainable tourism, it must be developed for and managed in a sustainable manner for bothvisitors and local communities.

How to prevent overtourism
Preventing overtourism is not a dead case and can be done in various ways. Here, especially local governments and tourist organizations have a big responsibility.

Some of the solutions to prevent overtourism is to:

• promote more off-season travel, for instance by having special attractions and activities which can only be experienced in these periods or better prices during low season.
• limit numbers to attractions/tours by for instance introducing quotas on how many that can visit a day.
• promote alternative, less-visited spots can help redirect travelers to decrease the demand in certain areas. This can for instance be done by having guided tours to lesser-known areas as well as creating routes for niche visitors.