Segovia is worth a visit if you like picturesque cities and architecture. It lies about an hour's drive to the north-northwest of Madrid, so doesn't present a large detour when trip planning. However, it deserves a minimum of half a day's time on-site, and I'd set aside an entire day to do the project justice.
Like most places in Europe, there's a new city and an old city. The old city lies atop a mesa that has been described as boat-shaped and the modern city occupies low-lying ground and nearby rounded hills. Connecting the nearest hill and the old city is an aqueduct built by the Romans that was still in service in the 19th century.
The old city has lots of narrow, winding streets, a few plazas, a fine semi-gothic cathedral and, at the sharp end of the mesa (dare I call it the "prow"?) is a Viollet-le-Duc style (though he wasn't involved here) restored Alcazar, or fortress-castle.
Aside from a few glimpses of the latter, the photos below deal with less imposing buildings found around the old city. The pictures were taken last October and are not adjusted in any way. They are concerned with various kinds of texturing found on those structures. This detailing fascinated me, and I hope you too will be interested.