What looks to be an idyllic mini castle seamlessly floating on the Tagus riverfront was originally a fort that served to protect Lisbon's ... the world during the Age of Discoveries.

Want to make the most of 4 days in Lisbon ... the Monument of Discoveries. This monument pays tribute to Portugal's rich history of exploration and discovery during the Age of Discovery.

This is what to do in Belém, Lisbon, including free ... Visiting this monument is a great opportunity to learn more about the ...