WORLD'S CLEANEST COUNTRIES REVEALED

The Emerald Isle is known for dramatic landscapes, literary geniuses and a rich history. Visit the 40,000 basalt columns that form the famed Giant's Causeway, stop by the windswept Cliffs of Moher and enjoy the craic in the cobbled streets of Dublin.

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With almost half of this country covered in forest, it should be no surprise that Estonia is famed for its clean air. Start your adventure in the capital of Tallinn with its medieval stone walls, cobbled streets and colourful heritage buildings. Go further afield and enjoy a horseback ride across Estonia's wild beaches, take a hike along the forest trails or go foraging for mushrooms and berries.

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Apart from clean streets, these tiny country has lots to offer. Take a trip to the wine region that stretches along the banks of the Moselle, go climbing in the area known as Little Switzerland, which is filled with canyons and for a cultural fix stop by the Grand Duke of Luxembourg’s Palace, which is open from July to September.

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No wonder Australians love the great outdoors, for they live in one of the cleanest environments around. If you want to see just some of the places that make Australia really special, take a trip to Kangaroo Island – Australia’s Galapagos. From here you can visit the food lovers’ paradise of Tasmania, before you take to the famed Blue Mountains World Heritage area and then make a splash at the Great Barrier Reef.

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Oh Canada, it's no surprise that you're in the top 10 of the cleanest countries on Earth. If you're looking for adventure take a road trip through the Rockies, go whale watching near Vancouver or enjoy a helicopter ride over Whistler. Looking to relax? Then take a dip at Banff Upper Hot Springs while looking out over Mount Rundle.

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Enjoy a city break in the mini archipelago that is Stockholm, then catch a flight to Kiruna where you can go dog sledding in Abisko National Park. It’s here that you’ll also have the chance to see the Northern Lights dancing across an unpolluted sky. If you want to get even closer to nature you can spend the night in an Icehotel.

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Take a drive around Iceland's Ring Road to discover a landscape filled with black sand, hot springs and waterfalls. The country, which became the backdrop to many Game of Thrones scenes, is also home to humpback whales, dolphins and thousands of birds - including the puffin. Six Senses hotel fans should be happy to know that it plans to open a new resort there in the not too distant future.

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Those who thought that the landscapes for the Lord of the Rings or The Hobbit were CGI need to take a flight to New Zealand. If you only have time to visit one of the islands - travel to the North Island to embrace the culture and the South Island for an adrenalin-filled adventure.

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The home of Vikings, waterfalls and fjords is a must-visit for any nature lover. Touch down in Oslo, then take one of the world’s most spectacular train journeys from Oslo to Myrdal. Want to burn some calories? Then enjoy a hike across the Jostedalsbreen and breathe in that fresh mountain air.

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Those chocolate-box villages, sparkling glaciers and thick emerald forests are really as idyllic as they look. For Switzerland is officially the cleanest country on Earth. Want to see more? Hike through the picturesque Graubunden Alps in St Moritz, glide across Lake Lugano, enjoy lunch in one of Lugano’s famed grottos and take a helicopter ride over the Swiss Alps.

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