Tourism in Tanzania  Tanzania is a country with many tourist attractions. Approximately 38 percent of Tanzania's land area is set aside in protected areas for conservation. There are 17 national parks, 29 game reserves, 40 controlled conservation areas (including the Ngorongoro Conservation Area) and marine parks. Tanzania is also home to Mount Kilimanjaro, the highest point in Africa. Travel and tourism contributed 17.5 percent of Tanzania's gross domestic product in 2016 and employed 11.0 percent of the country's labour force (1,189,300 jobs) in 2013. The sector is growing rapidly, rising from US $1.74 billion in 2004 to US $4.48 billion in 2013. In 2016, 1,284,279 tourists arrived at Tanzania's borders compared to 590,000 in 2005. Tanzania has almost 38% of its land reserved as protected areas, one of the world's highest percentage. Tanzania boasts 16 national parks and is home to a large variety of animal life. Among the large mammals include the Big five, cheetahs, wildebeest, giraffes, hippopotamuses and various antelopes. Tanzania's most well known wildlife attractions are located in the northern part of the country and include the Serengeti National Park, Tarangire National Park and Lake Manyara National Park. The Serengeti National park encompasses the world-famous great migrations of animals. The Serengeti National Park is the most popular park in the country and had the chance to host more than 330,000 visitors in 2012. In 2018, Serengeti National Park was voted the best African Safari Park following the depth study conducted by SafariBookings the largest online marketplace for African safaris. In their website, it reads, "In total 2,530 reviews were examined from the SafariBookings website. The 1,670 user reviews were contributed by safari tourists from 72 countries. To complement these user reviews, reputable guidebook authors (working for Lonely Planet, Rough Guides, Frommer's, Bradt and Footprint) teamed up in the SafariBookings Expert Panel to write 860 expert reviews"  The north is also home to the Ngorongoro Conservation Area. The Ngorongoro Conservation Area includes the Ngorongoro Crater, which is an extinct volcanic caldera with lions, hippopotamus, elephants, various types of antelope, the endangered black rhinoceros, and large herds of wildebeest and zebra.