The Gambia River defines the country's geography and most of its visitor activities. The waterway flows 1,120 kilometers from Guinea's Fouta Djallon highlands westward through The Gambia to the Atlantic Ocean, creating a narrow nation that extends no more than 48 kilometers north or south of its banks at any point. Senegal surrounds The Gambia on three sides, making this the smallest mainland African country at 10,689 square kilometers. The river remains navigable for oceangoing vessels up to Kuntaur during high water, approximately 240 kilometers inland.
Kunta Kinteh Island sits in the Gambia River opposite Albreda, 30 kilometers upstream from Banjul. UNESCO designated the island and related sites as a World Heritage Site in 2003 under the name "Kunta Kinteh Island and Related Sites." The British established Fort James on the island in 1651, rebuilding it multiple times after attacks by French forces and local rulers. The fort served as a holding station for enslaved Africans from the 1650s until Britain abolished the slave trade in 1807. The island measures approximately 3 acres at low tide. Fort James's ruins include stone foundations, a magazine, and partial walls. The site gained international recognition after Alex Haley's 1976 novel "Roots" featured a character named Kunta Kinteh captured near the island. Archaeological evidence and historical records document the fort's role in transporting an estimated several thousand enslaved people, though exact numbers remain uncertain.
The Wassu Stone Circles lie 22 kilometers from Georgetown in the Central River Region. UNESCO included these megalithic circles in the "Stone Circles of Senegambia" World Heritage designation in 2006, covering sites in both The Gambia and Senegal. The Wassu site contains 11 stone circles with 51 standing stones. The stones range from 1 to 2.5 meters in height, cut from laterite rock. Archaeological surveys date the circles between the 3rd century BCE and the 16th century CE. Each circle surrounds burial sites containing pottery shards, charcoal, and human remains. The builders transported stones weighing up to 10 tons without wheeled vehicles or draught animals. Additional stone circle sites in The Gambia include Kerbatch in the Central River Region and Ker Batch in the Upper River Region.
Abuko Nature Reserve occupies 105 hectares in the Western Division, 20 kilometers from Banjul near Lamin village. Established in 1968, Abuko protects gallery forest and savanna woodland representative of The Gambia's original vegetation before agricultural clearing. The reserve maintains 3 kilometers of marked trails. Documented species include bushbuck, red colobus monkey, green vervet monkey, Nile crocodile, and over 280 bird species. The reserve operates as a fenced park with a single entrance gate. Peak wildlife viewing occurs from November through May during the dry season when animals concentrate near permanent water sources. The reserve includes three pools inhabited by Nile crocodiles and West African dwarf crocodiles.
River Gambia National Park comprises five islands in the Gambia River totaling 585 hectares, located 268 kilometers upstream from Banjul near Kuntaur. Established in 1978, the park protects riverine forest habitat. The Gambian government and conservationists introduced rehabilitated chimpanzees to the islands starting in 1979 under a program managed by primatologist Stella Brewer Marsden. The islands now support approximately 100 chimpanzees descended from those introductions. Access to the islands remains prohibited to protect both the habituated chimpanzees and human visitors. Observation occurs from boats maintaining minimum distances from shore. The park also supports hippopotamus populations, though numbers fluctuate with seasonal river levels.
Kachikally Crocodile Pool in Bakau functions as a sacred site for Mandinka and Wolof communities. The pool measures approximately 60 by 40 meters, fed by groundwater springs. Resident West African crocodiles number between 80 and 100 individuals. Local tradition attributes fertility properties to contact with the pool's water and crocodiles. Women seeking pregnancy perform rituals at the pool. The site operates as a managed tourist attraction with entrance fees. Visitors can approach and touch the crocodiles, which keepers feed regularly. A small museum at the site displays information on crocodile biology and the pool's cultural significance.
Bijilo Forest Park covers 51.3 hectares along the coastal strip between Kololi and Cape Point. The Department of Parks and Wildlife Management administers the park, which opened to visitors in 1991. The forest supports red colobus monkeys, green vervet monkeys, bushbuck, and monitor lizards. Four marked trails traverse the park, including a 1.5-kilometer nature trail. The coastal location attracts both forest and coastal bird species. The park borders multiple hotels and residential developments, making it accessible by foot from the Kololi tourist area.