Overtourism is rattling cities across Europe, where some activists blame short-term rental companies like Airbnb for the rising cost of living.

Airbnb has hit back at those blaming the company for the issues arising from overtourism across Europe. Many countries across the continent have been experiencing a number of problems as a result of mass tourism, and now the holiday property rental company has addressed city leaders regarding the issue.

The U.S. State Department is warning travelers to exercise more caution when traveling to Europe amid a renewed wave of anti-tourism protests.