Yosemite and Yellowstone National Parks might be beautiful, but they are not the only stunning parks this planet has to offer. The world is full of stunning nationally protected parks spanning vast African savannahs, European mountain ranges, South American rainforests and beautiful beaches - and all of these destinations areextremely popular with tourists. In fact, according to a new study published inPLOS Biology, the world's national parks and nature reserves receive around eight billion visits every year.

"It's fantastic that people visit protected areas so often, and are getting so much from experiencing wild nature," said lead author of the study, Cambridge University Professor Andrew Balmford.

The study authors say that the billions of visits could generate as much as $600 billion of tourism expenditure annually, a huge economic benefit that far exceeds the less than $10 billion cost of maintaining these sites.

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Outdoor lovers should head to , Canada’s oldest national park, located in the Canadian Rockies. This incredible park is full of snow-capped peaks, incredible glaciers, beautiful meadows and beautiful lakes, such as Lake Louise. It offers a range of summer and winter activities, from whitewater rafting to hiking to skiing. Travelers not afraid of the cold should also check out of trees covered in frozen snow deposits.

Perhaps some of the most because . For example, spans approximately 2 million hectares and is known for being home to a wide variety of wildlife, including elephants, lions, leopards and buffalo. The game reserve can also be visited at night to see animals that hunt at night. is also a popular destination with tourists. Each year, - a migration comprised of millions of wildebeests, gazelles, zebras and their predators - passes through this UNESCO World Heritage site around June each year. In Rwanda, visitors can also hike through to spot wild gorilla families.

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Of course, Africa is not the only destination with . are home to . Indonesia’s Ujung Kulon National Park is the , according to UNESCO, while is the only known home of the dangerous giant lizards called “Komodo dragons.” Meanwhile, , visitors have the opportunity to on a tiger safari in .

So, whether you are looking to take a safari in Africa, climb snowy mountains in Switzerland, explore volcanic landscapes in Indonesia or relax on the beach in Costa Rica, here are 83 national parks around the world you have to see.

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