This thing about the city of Osma and the Burgo de Osma deserves an explanation to clarify things.
To start from the beginning, we must travel back to the past, before the arrival of the Roman legions to this lands. Right here there was a Celtic Iberian settlement called Uxama which must have been of enough importance for the Romans since they decided to add it to their collection of invaded territories back in 99 BC.
With the city, the Romans did what was expected of them, that is, Romanise it. Uxama-Argalea gained power and importance, and things didn’t change much in the following centuries until the “Ave Caesar” people began to disappear, and their places were taken by the Visigoths first, and then the Arabs. Much later, during the Reconquest, there was a lot of movement in this territory, going from Christian to Muslims hands several times and suffering battles and skirmishes every second day. And Osma’s Castle is still here to tell us all those adventures.
The Christian domain was consolidated in the eleventh century, and from then on, the history of the place took another course. By order of the Bishop they began to build a Cathedral, around the year 1101 and surrounding it a village was going to be born and grow, Burgo de Osma, which over time would gain importance over the old population and would make clear the authority of Christianity around the area. And like this, the villa kept growing and prospering.
Long after, in the thirteenth century, another bishop decided to get rid of the old Romanesque Cathedral and build another one according to Gothic fashion. But if it doesn’t look very Gothic what you see today is because the successive hierarchs would change and add things to the building over time, and also leaving their respective shields so no one would forget them.
From Medieval times are also Santa Cristina’s Church and, just about it, the walls from the mid-fifteenth century, which are among the best preserved from this period. But Burgo de Osma also has master buildings from other centuries: from the sixteenth, we have the Reinassance University of Santa Catalina, some sort of Cambridge in the middle of Castille, and from the next century the Convent of Carmen and the Hospital of San Agustin.
Some Neoclassical works, such as the Plaza Mayor, top off a Historic-Artistic Ensemble in which you will be immersed in history even if you don’t want to.