Larissa and Duncan are sailing around the world with their two kids to spot wildlife and collect vital ocean data. View on euronews ...

John Anderson, of Forks, scours beaches to collect trash and treasures that land on the Washington shoreline, and has curated 46 years' of pickings in a museum.

Beauty is indeed in the eye of the beholder, but there are certainly some cities around the world that are stunning ... and overall cleanliness. Take a boat tour to see the Harbour Bridge ...