Geography

Reef

Reef: Types, Formation, Ecology, and Human Interactions

A reef is a submerged feature—rock, sandbar, or biogenic structure—supporting diverse marine life. This article describes reef types, formation, ecological value, threats, and huma

Reference ellipsoid

Reference ellipsoid: mathematical model for Earth in geodesy

Regen (district)

Regensburg (district)

Region

Region: Definition, Types, History, and Uses in Geography

Región Autónoma del Atlántico Sur

Región Autónoma del Atlántico Sur (RAAS), Nicaragua

Region of Murcia

Region of Murcia, Spain

Region of Southern Denmark

Region Zealand

Region Zealand (Region Sjælland)

Regional language

Regional language: definition, status, history and examples

Regional Municipality of York

Regional Municipality of York (York Region)

Regions of Brazil

Regions of Brazil: the IBGE five-fold division

Regions of Chile

Regions of Chile: administrative divisions, governance and geography

Regions of England

Regions of Finland

Regions of France

Regions of France: overview, structure, and recent reforms

Regions of Iceland

Regions of Iceland: purpose, list, and administrative role

Regions of Italy

Regions of Italy: administrative divisions, powers and special statutes

Regions of Peru

Regions of Peru: administrative divisions and capitals

Regions of Slovakia

Regions of Slovakia (Kraje): overview, structure and list

Registan Desert

Registan Desert: geography, ecology, and human interactions

Regnitz

Regnitz (river in Bavaria, Germany)

Reignac, Gironde

Reignac (Gironde) — commune in southwestern France

Reinach

Reinach: Swiss places and a surname

Remetea, Bihor

Rems-Murr-Kreis

Renala Khurd Tehsil

Rendsburg-Eckernförde

Rendsburg-Eckernförde district (Schleswig-Holstein, Germany)

Reno (river)

Reno (river) — from the Northern Apennines across Emilia-Romagna to the Adriatic

Renville County, North Dakota

Republic County, Kansas

Republic of Crimea

Republic of Cyprus

Cyprus: Island nation in the Eastern Mediterranean

Republic of Ireland

Republic of Upper Volta

Republican River

Republika Srpska

Republika Srpska: entity of Bosnia and Herzegovina

Retezat Mountains

Retezat Mountains: peaks, glacial lakes, and Romania's first national park

High massif in Romania's Southern Carpathians known for rugged peaks, numerous glacial lakes (including Lacul Bucura), rich biodiversity and the Retezat National Park.

Réunion

Reuss (river)

Reutlingen (district)

Reutlingen (district) — Landkreis in Baden-Württemberg

Reutte District

Reutte District (Außerfern) — geography, history and highlights

Rey County

Rey County (Ray) — Tehran Province, Iran

Rhäzüns

Rhäzüns — municipality in the Imboden region of Graubünden, Switzerland

Rhein-Erft-Kreis

Rhein-Hunsrück-Kreis

Rhein-Kreis Neuss

Rhein-Lahn-Kreis

Rhein-Lahn-Kreis: overview, landscape, administration and sites