For more on this and other stories watch The BBC Travel Show – every weekend on the BBC News Channel and BBC World News.
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 “The Essential List”. A handpicked selection of stories from BBC Future, Culture, Capital and Travel, delivered to your inbox every Friday.
