Awesome Óbidos Castle, The name "Óbidos" probably derives from the Latin term oppidum, meaning "citadel", or "fortified city". The municipality had its origin in an early Roman settlement near the foothills of an elevated escarpment
I was here - Óbidos medieval town - Portugal. North of Lisbon started as a Roman city. There are still some remains of Roman structures. After 713 the Mours took over & remained until in 1148 the Portuguese king conquested it .