(CNN) — From sheltering some of the globe's most endangered species to showcasing astonishing patterns of migration, Africa's national parks are among the world's most spectacular.
More and more visitors flock each year to the continents' parks and reserves, bearing witness to nature on a grand scale and playing a vital role in generating tourism income.
Here are some of the top picks on the continent.
Maasai Mara National Reserve, Kenya
A hot air balloon carries tourists during the annual wildebeest migration in the Maasai Mara game reserve.
Maasai Mara National Reserve, which has been honored by the World Travel Awards, is named after its ancestral inhabitants, the Maasai people, and is one of the most popular tourist destinations in southwest Kenya.
In addition to an impressive population of big cats, rhinos and elephants, it plays host from July through to October each year to one of the world's more spectacular movements of wildebeest. Known as the Great Migration, the phenomenon involves more than 1 million wildebeest and hundreds of thousands of gazelles, zebras and other animals, which migrate from the Serengeti National Park in Tanzania.
Serengeti National Park, Tanzania
A small river flows through palm-lined shores in a lush savannah grassland in Serengeti National Park.
Serengeti National Park was established in 1951, making it Tanzania's oldest national park. The park is arguably one of the most famous in the world and covers 5,700 square miles of grassland, riverine forest, woodlands and savannah.
Virunga National Park, Democratic Republic of Congo
Two mountain gorillas lay on a bed of brush on the slopes of Mount Mikeno in the Virunga National Park.
Established in 1925, Virunga National Park is Africa's oldest national park and is often considered the crown jewel of parks on the continent. It lies in the eastern part of the Democratic Republic of Congo.
Designated a World Heritage Site by UNESCO in 1979, it was created to protect mountain gorillas in what was then known as the Belgian Congo. It stretches over 3,000 square miles and houses forests, savannas and active volcanoes and the Rwenzori Mountains.
The park is known for being the "continent's most biologically diverse protected area" and is home to endangered species, such as the mountain gorilla and the okapi.
In the 1970s, Virunga welcomed an average of 6,500 visitors every year, but it has suffered terribly from armed conflict and poaching. The park is slowly re-establishing itself through international donations.
Bwindi Impenetrable National Park, Uganda
The morning valley mist wafts across the Bwindi Impenetrable National Park in southwestern Uganda.
The Bwindi Impenetrable National Park is located in southwestern Uganda and is home to a multitude of birds, butterflies and endangered species, including the mountain gorilla. Some 300 wild gorillas live in the park, accounting for nearly half the world's population The main tourist attraction is gorilla tracking, which generates a steady stream of revenue for the Uganda Wildlife Authority. It's estimated the direct total income from gorilla visits in the Bwindi park is $15 million a year.
Kruger National Park, South Africa
A hippopotamus howls while bathing in the Limpopo River at the Pafuri game reserve in Kruger National Park.
Kruger National Park was established as a game reserve in 1898 and is home to a vast number of species, including more than 500 types of bird and more than 100 reptiles. It also boasts a huge diversity of trees and flowers.
The park is also known for big game, as well as more than 255 recorded archeological sites. Several rivers traverse the park from west to east, including the Sabie, Olifants, Crocodile, Letaba, Luvuvhu and Limpopo.