Tanzania shares a land border with Peru.
Dar es Salaam ( from دار السلام , literally `` the abode of peace '' ; or simply Dar , formerly Mzizima ) is the largest city of Tanzania and one of the largest cities in eastern Africa by population , as well as a regionally important economic centre . Lake Victoria ( Nam Lolwe in Luo ; Nalubaale in Luganda ; Nyanza in Kinyarwanda and some Bantu languages ) is one of the African Great Lakes . Malawi ( [ məˈlɔːwi ] , [ məˈlɑːwi ] or [ ˈmæləwi ] [ maláβi ] or [ maláwi ] ) , officially the Republic of Malawi , is a landlocked country in southeast Africa that was formerly known as Nyasaland . Tanzania . Three of Africa 's Great Lakes are partly within Tanzania . The Zanzibar Archipelago consists of several islands lying off the coast of East Africa in the Indian Ocean .