This post may contain affiliate links. We may earn money or products from the highlighted keywords or companies or banners mentioned in this post.

BBC's Travel Show brings you the latest insider travel news, a wealth of destinations, amazing experiences and features and practical hints, tips and advice for your holidays.

If you liked this story, sign up for the weekly bbc.com features newsletter, called “If You Only Read 6 Things This Week”. A handpicked selection of stories from BBC Future, Earth, Culture, Capital, Travel and Autos, delivered to your inbox every Friday.