Two small sailboats drift on the Mondego River below Coimbra, Portugal, in this real photo postcard, the University of Coimbra — founded 1290, one of the oldest in continuous operation anywhere in the world — crowning the hillside above. A UNESCO World Heritage Site since 2013, its baroque clock tower still dominates this skyline exactly as it does here.

• Caption: COIMBRA — Vista parcial
• Publisher: Gouveia
• Status: Unposted