Caves of DrachThese four caves, with their weird formations and impressive chambers, are the most famous tourist attraction in Mallorca, Spain.
Postojna CaveThe most visited cave in Europe, and the biggest cave in Slovenia.
Bucura LakeThe largest glacial lake in Romania, situated in the beautiful Retezat National Park.
Vidraru LakeAn artificial lake in Romania, formed after the construction of Vidraru Dam, one of the biggest dams in Europe.
Lake BledA true oasis, an emerald lake surrounded by green forests and a medieval castle.
Cheddar CavesA group of two caves, home to the oldest complete skeleton in Britain.
Grotte de DargilanOne of the largest natural caves in France, discovered in 1880.
Aletsch GlacierThe largest glacier in the Alps, with a length of 23 kilometers and an area of 120 square kilometers.
Jostedalsbreen GlacierMeasuring more than 60 kilometers in length, this is the largest glacier in continental Europe.
Vatnajökull GlacierThe largest glacier in Iceland, covering 8% of the country's territory.
Snowdonia National ParkThe park is like a little slice of the Alps tucked above the rolling moors and hills of North Wales.
Stromboli VolcanoThe volcano with the world's longest recorded period of activity: more than 2.000 years.
Gullfoss (Golden Falls)In this land of beauty that is Iceland, a natural wonder stands above.
Vatnajökull National ParkThe park covers about 12% of Iceland's surface and is home to Iceland's highest mountain, largest glacier and Europe's most powerful waterfall.
Koli National ParkThis park in Finland has 30 square kilometres of forested hills and it also includes two ski resorts.
Mount VesuviusOne of the world's most dangerous volcanoes, with many people living near its crater.
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