In Barcelona visitors have been sprayed with water pistols in an expression of local people’s anger about over-tourism. By contrast in Copenhagen, tourists are to be given financial and other incentives to come – as long as they act responsibly.

The Danish capital appears to be bucking the trend of other travel hotspots struggling under the burden of too many tourists, by attempting to lure only the well-behaved, socially and environmentally conscious traveller.

The national tourist board has introduced a programme to encourage climate-friendly, sustainable behaviour. From Monday, it will reward those who choose to ride a bike, take public transport or undergo a bit of work like gardening or rubbish collection at the harbour or in the city’s parks.