Burgo de Osma-Ciudad de Osma

It is made up of two parts:

the smaller Ciudad de Osma (city of Osma) to the west of the river Ucero, which flows southwards to the river Duero; and

the larger El Burgo de Osma (the borough of Osma, sometimes just called El Burgo) to the east of the river Ucero, the cathedral town of the province.

Osma derives from the Celto-Roman Uxama, while Burgo is cognate to the English word borough.