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.
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.
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.
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.
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.