| DOURO | River on the border between Spain and Portugal before flowing west to the Atlantic (5) |
| TAGUS | Longest river of the Iberian Peninsula, forming part of the border between Spain and Portugal (5) |
| LOIRE | France's longest river, rising in the Massif Central and flowing west to the Atlantic (5) |
| XINGU | River in Brazil that rises on the Mato Grosso plateau before flowing north to the Amazon delta (5) |
| RHINE | River which rises in Switzerland before flowing through Germany and the Netherlands (5) |
| INDUS | River of Pakistan which rises in Tibet before flowing to the Arabian Sea (5) |
| SIRET | River which rises in Ukraine before flowing through Romania to the Danube (5) |
| TAMAR | River on the border of Devon and Cornwall (5) |
| USONE | It runs 2,370 miles from Key West to the Canadian border |
| ENNUI | Tedium when nun travels between Spain and Italy (5) |
| HOOVERDAM | Barrier in the Black Canyon of the Colorado River, on the border between the states of Nevada and Arizona (6,3) |
| RIOBRAVO | Mexican name for a river on the border between Mexico and the US (3,5) |
| DANUBE | River which forms the border between Ukraine and Romania before flowing into the Black Sea (6) |
| TAURUS | Mountain range in southern Turkey that runs parallel to the Mediterranean coast. It extends along a curve from Lake Egridir in the west to the upper reaches of the Euphrates River in the east. (6) |
| RHONEALPES | Former region of SE France from the edge of the Massif Central in the west to the Switzerland and Italy borders (5-5) |
| ODER | A river in Central Europe, rising in the Czech Republic and flowing north and west to the Baltic (4) |
| PYRENEES | Mountain range that forms a border between Spain and France |
| VAAL | South African river flowing west to join the Orange River (4) |
| GWYNEDD | It is a county in northwestern Wales, extending from the Irish Sea in the west to the mountains of Snowdonia in the east. Tourists flock to Caernarfon to see its castle, which, along with other fortif |
| ELBE | River in Central Europe, rising in the northern Czech Republic and flowing north-west to the North Sea (4) |
