Geography

Tyresta National Park A small but ecologically important park near Stockholm, Sweden, noted for old-growth forest, lakes, marked trails and recovery after a large 1999 fire.

Tyrol (Tirol): Alpine region spanning Austria and Italy Tyrol Tyrol is an Alpine region divided between Austria and Italy, noted for high mountains, winter sports, a mixed German–Italian–Ladin culture, a Habsburg legacy, and modern cross‑bord…

Tyrol (Austrian state) Tyrol (state) Tyrol is a western Austrian federal state of alpine terrain, divided into North Tyrol and East Tyrol; known for Innsbruck, mountain passes like the Brenner, winter sports and a dis…

Tyrrell County, North Carolina A small, rural county on North Carolina’s coastal plain. Created in colonial times, Tyrrell County is known for low population, wetlands and water‑based recreation, with Columbia a…

Tyrrhenian Sea A major arm of the western Mediterranean off Italy’s west and south coasts, the Tyrrhenian Sea is known for its islands, volcanic activity, important ports, and ecological and hist…

Ubangi River (Oubangui) Ubangi River Major Central African river, the largest right-bank tributary of the Congo River. Runs from the confluence of the Uele and Mbomou, passes Bangui, and drains a large basin shared by…

Ucayali Region, Peru Ucayali Region Peruvian Amazon region centered on Pucallpa, named for the Ucayali River. Lowland rainforest, important river transport hub, home to indigenous peoples, timber and agriculture, and…

Uckermark (district) — largest district in Brandenburg, Germany Uckermark Uckermark is a rural district in northeastern Brandenburg, Germany, known for extensive lakes, forests and low population density; formed in 1993 by merging several historic distri…

Udhampur district: geography, people, economy and culture Udhampur district Overview of Udhampur district in Jammu and Kashmir: location, administration, demographics, languages, economy, transport links, notable places and cultural features.

Uecker-Randow — former district of Mecklenburg-Western Pomerania Uecker-Randow Former district in eastern Mecklenburg-Western Pomerania, Germany, established 1994 from Pasewalk, Ueckermünde and part of Strasburg; merged into Vorpommern-Greifswald in 2011. Geo…

Uelzen (district) — Landkreis in Lower Saxony, Germany Uelzen (district) Uelzen is a rural district (Landkreis) in northeastern Lower Saxony, Germany, centered on the town of Uelzen. It includes heathland, forests, spa towns and the source of the Ilmena…

Uetersen — northern German town known for its Rosarium Uetersen Uetersen is a small town in Pinneberg district, Schleswig-Holstein, Germany, noted for the Rosarium Uetersen and as the departure point of Mathias Rust's 1987 flight to Moscow.

Uganda: overview, geography, history, economy and biodiversity Uganda Uganda is a landlocked East African republic with capital Kampala. It has an agricultural economy (notably coffee), rich biodiversity including mountain gorillas, area ~236,040 km²…

Ugar (river) — tributary of the Vrbas in Bosnia and Herzegovina Ugar (river) The Ugar is a roughly 44.5 km river rising on Vlašić mountain in central Bosnia and Herzegovina. A right-bank tributary of the Vrbas, it drains upland terrain and supports local ec…

Ugo Province — historical region of northern Honshū Ugo Province Ugo Province (羽後国) was a historical Japanese province in northern Honshū, largely corresponding to modern Akita Prefecture and parts of Yamagata Prefecture; it figures in regional…

Uhart-Cize — commune in Pyrénées-Atlantiques, French Basque Country Uhart-Cize Uhart-Cize is a small commune in the Pyrénées-Atlantiques département of southwestern France, notable for Basque cultural influence, rural landscape and proximity to the Pyrenees f…

Uíge Province, Angola Uíge Province Uíge is a northwestern province of Angola with a mixed rainforest–savanna landscape, a history shaped by the Kingdom of Kongo and colonial coffee production, and ongoing post‑war r…

Uinta County, Wyoming: Location, Population, and Transportation Uinta County, Wyoming Uinta County, Wyoming—located on the state’s western edge near Utah, home to 21,118 residents (2010) with county seat Evanston. Explore its mix of small towns, open country and reg…

Uintah County, Utah: geography, history, economy and points of interest Uintah County, Utah Uintah County is in northeastern Utah, with Vernal as its county seat. The county covers the Uinta Basin, includes parts of the Uintah and Ouray Reservation, and is known for energ…

Ujar District (Ucar Rayon), central Azerbaijan Ujar District Ujar District (Ucar Rayon) is a central Azerbaijani administrative region centered on the city of Ucar. It includes one city and 32 villages and is primarily an agricultural area w…

Ukraine: geography, history, government and contemporary overview Ukraine Comprehensive overview of Ukraine — its geography, history, political system, economy, culture, and recent events, with key facts and context for readers wanting a concise referenc…

Ulja — village in Hiiu County, Estonia Ulja Ulja is a small rural village on Hiiumaa island in northwestern Estonia, historically part of Emmaste Parish and now within the larger Hiiumaa municipality after administrative ref…

Ulleungdo Ulleungdo is a volcanic island in the East Sea administered as Ulleung County, North Gyeongsang Province, South Korea; known for its steep cliffs, Seonginbong peak, unique ecology…

Ullswater: the ribbon lake of the English Lake District Ullswater Ullswater is a long, narrow ribbon lake in the Lake District of England, noted for its glacial origin, Z-shaped form, scenic waterfalls, nearby peaks such as Helvellyn, and village…

Ulrichen: Alpine village in the Goms district of Valais, Switzerland Ulrichen Ulrichen is a small alpine village and former municipality in the district of Goms, canton Valais, Switzerland. In 2009 it merged with Obergesteln and Oberwald to form the new muni…

Ulster: province of Ireland, its counties and identity Ulster Ulster is one of Ireland's four historic provinces, made up of nine counties split between the Republic of Ireland and Northern Ireland; it has distinct geography, history and cult…

Ultar Sar Ultar Sar is a 7,388 m peak in the Batura Muztagh of the Karakoram in northern Pakistan, known for steep faces, technical climbing and a long history of difficult ascents culminati…

Ultra-prominent peak (Ultra, P1500) Ultra-prominent peak An ultra-prominent peak (Ultra or P1500) is a summit with topographic prominence of at least 1,500 m. It identifies mountains that stand out from surrounding terrain and is used in…

Uluṟu‑Kata Tjuṯa National Park Uluṟu-Kata Tjuṯa National Park Protected area in Australia’s Northern Territory, encompassing the sandstone monolith Uluṟu and the dome formations of Kata Tjuṯa, central to Anangu culture and recognised for comb…

Umbria — the green heart of central Italy Umbria Umbria is a small, landlocked region in central Italy known for medieval towns, the Tiber valley, olive oil and wine, Assisi's Franciscan heritage, and cultural festivals in Perugi…

Umerkot District Umerkot District in Sindh province, Pakistan: overview of its geography, history, population, culture, administration and economic character, including its historical association w…

Union County, Arkansas County in southern Arkansas centered on El Dorado. Established 1829; noted for its role in regional oil, timber, and agricultural economies and for local historic and cultural site…

Union County, Illinois Union County is a rural county in southern Illinois anchored by the county seat Jonesboro. It had 17,808 residents at the 2010 census and is known for agriculture, small towns, and…

Union County, Indiana Union County is a small, rural county on Indiana’s eastern edge. Established in 1821 with Liberty as its seat, it had 7,516 residents at the 2010 census and remains largely agricul…

Union County, Iowa Union County is a rural county in southwestern Iowa with the county seat at Creston; population recorded as 12,534 in the 2010 census. The economy centers on agriculture, small tow…

Union County, Kentucky Union County, established in 1811 in western Kentucky, is a rural county with a county seat at Morganfield. Its economy centers on agriculture, river commerce and small industry; p…

Union County, New Jersey A densely populated county in northeastern New Jersey, home to Elizabeth and part of the New York metropolitan area; notable for industrial ports, transport links, suburban municip…

Union County, New Mexico Union County is a rural county in northeastern New Mexico, established in 1894 with county seat Clayton. Known for low population density, ranching, and volcanic and paleontologica…

Union County, North Carolina County in south-central North Carolina, part of the Charlotte metropolitan region; county seat Monroe; historically agricultural with rapid suburban growth since the late 20th cent…

Union County, Oregon Union County is a largely rural county in northeastern Oregon with La Grande as its county seat. It features the Grande Ronde Valley, parts of the Blue Mountains, agriculture, and…

Union County, South Carolina: Overview, History, and Local Features Union County, South Carolina Union County, South Carolina, is a historically rural county formed in 1785. Its county seat is Union and the 2010 census recorded 28,961 residents. This article summarizes geograp…

Union County, South Dakota Union County is a southeastern South Dakota county with its seat at Elk Point. Founded in 1862, it is part of the Sioux City metropolitan area and has an economy rooted in agricult…

Union Parish, Louisiana Union Parish is a rural parish in northern Louisiana, established in 1839 with Farmerville as its seat. It combines agriculture, forests, lakes and small-town communities and had a…

United Arab Emirates A federation of seven emirates on the southeastern Arabian Peninsula, known for rapid development, oil and gas wealth, major cities Abu Dhabi and Dubai, and prominent modern archit…

United Counties of Prescott and Russell A bilingual regional municipality in Eastern Ontario, Canada encompassing rural townships, towns and ecological areas such as the Alfred Bog; formed by the 1820 merger of Prescott…

United Kingdom: overview, structure, history and contemporary role United Kingdom Concise encyclopedic overview of the United Kingdom: its composition, government, history, languages, economy, culture, and international relationships.

United States of America United States A federal republic in North America composed of 50 states, a federal district, and several territories; a major global economic, cultural, and military power with diverse geography…

United States Minor Outlying Islands Collective name for nine small U.S. territories in the Pacific and Caribbean, mostly uninhabited, administered separately, and notable for wildlife protection, strategic uses, and…