People enjoying Tagus riverside near to the Discoveries Monument in Lisbon with 25th of April bridge in the background. Located along the river were ships departed to explore and trade with India and Orient, the monument celebrates the Portuguese Age of Discovery (or Age of Exploration) during the 15th and 16th centuries and it was Inaugurated on 9 August 1960, its completion was one of several projects nationwide intended to mark the Comemorações Henriquinas (the celebrations marking the anniversary of the death of Henry the Navigator).