Natural Wonder: Upper Waikani Falls, Maui, Hawaii

The island of Maui has much more to offer than just the oceanfront and beautiful beaches. One place worth a visit is the Upper Waikani Falls along the Hana Highway. Upper Waikani Falls is also known as Three Bears, thanks to the three separate but parallel falls of differing lengths.

Photographs of the falls may give the impression that the falls is fairly small, but it's actually 70 feet tall. The falls can change in size dramatically as the flow depends on rainfall. In the winter months the falls can be huge and unapproachable, whereas in the spring and summer they can ideally be much smaller.

When the falls are at a safe flow rate, you can take a hike down from the road and take a swim. It is a bit hard to reach, but once you get down at the falls it is a gorgeous scene. The water on these falls is often exceptionally clear.

While it’s deep enough to swim in, there aren’t any places without rocks/hazards which make this poole unsafe for cliff jumping or diving.

Natural Wonder: Mount Taranaki, New Zealand

Mount Taranaki is New Zealand's most perfectly formed volcano. The snow-capped cone of Mt Taranaki lures visitors who appreciate geological phenomena. Apart from one small bump - a subsidiary vent called Fantham's Peak - the mountain's cone is beautifully symmetrical. Mount Taranaki is around 120,000 years old and last erupted in 1775. The volcanologists agree that the mountain is 'dormant' rather than extinct.

Often described as New Zealand’s most climbed mountain, Mt Taranaki provides non-mountaineers with an achievable summit challenge. The main climbing route to the summit starts at North Egmont, and you need to allow 6 to 8 hours for the return trip. Climbing to the summit is achievable for experienced hikers in all seasons – although winter is more difficult – and is best done with a guide.

Natural Wonder: Fitz Roy, Argentina

Fitz Roy is a mountain in Patagonia, on the border between Argentina and Chile. It is located in the Southern Patagonian Ice Field, near El Chalten village and Viedma lake.

The height of the mountain is 3,405 m. Its original name is Chalten, that in Tehuelche dialect means “smoking mountain”. This is due to a rare aeolic phenomenon that makes its top always appear as it was surrounded by clouds, which gives the mountain a smoking volcano look.

First climbed in 1952 by French alpinists Lionel Terray and Guido Magnone, it remains among the most technically challenging mountains on Earth. However, there are also paths for easier trekking.

Natural Wonder: Seljalandsfoss Waterfall, Iceland

Seljalandsfoss waterfall is one of the best-known waterfalls in Iceland. This beautiful waterfall, that drops 60 m down, is part of the Seljalands River that runs from the volcano glacier Eyjafjallajökull.

Seljalandsfoss waterfall is about 120 km from Reykjavik. You can reach it by car, and than walk along the path that takes you behind the waterfall.

Seljalandsfoss waterfall is one of the must place to visit in Iceland.

Natural Wonder: El Capitan, Yosemite, United States

El Capitan is a magnificent rock formation in Yosemite National Park, in the USA. This vertical rock formation is located on the north side of Yosemite Valley. The granite monolith extends about 900 m from base to summit along its tallest face.

The top of El Capitan can be reached by hiking out of Yosemite Valley on the trail next to Yosemite Falls, then proceeding west. For climbers, the challenge is to climb up the sheer granite face. There are many named climbing routes, all of them arduous, including Iron Hawk and Sea of Dreams.