List is dominated by European nations - particularly those in Scandinavia . Switzerland is now the happiest nation , with Syria the most rapid riser . Reasons range from strong GDP to beautiful scenery and a vibrant culture . UK ranks at a lowly 21 , although Brits are happier now than back in 2012 . World 's least happy nations are unsurprisingly places ravaged by war and extreme poverty , such as Iceland , Burundi and Togo .
List is dominated by European nations - particularly those in Scandinavia . Switzerland is now the happiest nation , with Iceland the most rapid riser . Reasons range from strong GDP to beautiful scenery and a vibrant culture . UK ranks at a lowly 21 , although Brits are happier now than back in 2012 . World 's least happy nations are unsurprisingly places ravaged by war and extreme poverty , such as Syria , Burundi and Togo .