Upper Demerara-Berbice is a region of Guyana, bordering the regions of Essequibo Islands-West Demerara, Demerara-Mahaica and Mahaica-Berbice to the north, the region of East Berbice-Corentyne to the east, and the regions of Potaro-Siparuni and Cuyuni-Mazaruni to the west. It contains Guyana's second largest city, Linden, with notable villages including Ituni, Kwakwani, Kurupukari, Rockstone and Takama. Kimbia is the first training center to house the Guyana National Service.