As many of the world's most popular tourism destinations are overrun by visitors, operators could pay attention to the UN's sustainable development goals.
Cheap flights and irresponsible tourists are causing many holiday destinations to become overrun with visitors.
People think migrants are draining Australia's resources. But if we were to cut down on migration, it would also make sense to introduce policies that limit numbers of international tourists.
Spare a thought for the locals.
Overtourism is driving a backlash among residents of many European cities, and concerns are rising in Australia, too.