Castelo de Arraiolos

Alto Alentejo

It's worth making the ascent up to the Arraiolos castle for fine views over the countryside. The original structure dates from the 14th century, and it's one of Portugal's few fortifications built in a circular pattern.

It's a short but uphill walk from the main plaza (head west along Rua Nova and turn right along Travessa do Castelo); you can also drive up here.