Douro Fort Construction began in 1570 but only ended in 1647. The fort was built to protect the Douro jetty. It has since been deactivated, and is now better known as the Foz Castle. The Fort hosts exhibitions regularly.
|Venue name:||Fortaleza de São João da Foz|
Esplanada do Castelo
|Opening hours:||Mon-Fri 10am-6pm|