Two Australian tourists, who were reported to be a couple, were found dead on Tuesday at Pescadores beach in Ericeira, Mafra, Portuguese Lusa News Agency reported.
The two tourists had apparently been taking a selfie and fell over the protective wall and onto the beach in the town of Ericeira, some 50 km northwest of Lisbon, Lusa said.
The accident is presumed to have happened between 1:00 am (2300 GMT) and 6:00 am (0400 GMT) local time on Tuesday.
The beach is ringed by cliffs and a 40-metre high wall.
The victims, a woman in her 30s and a man in his 40s, were found dead on the beach by a worker who was cleaning the beach, but their cell phone was still at the top of the cliff by the road.
The Australian Embassy in Lisbon was notified about the death of two Austrian nationals. Police were called to the scene but said there appeared to be no suspicious circumstances.
It was not the first time that tourists had fallen off the wall.
In a similar incident that happened in 2014, a couple fell to their death while taking selfie on the rocky edge in Cabo da Roca in west Portugal.
The couiple was reported to have crossed a safety barrier in order to reach the cliff edge.
The cliff edge at Portugal’s most westerly point is a popular spot for tourists looking to photograph themselves “at the edge of Europe.”