Praia da Adraga is less than an hour's drive from Lisbon and it is populated by cliffs, rocks, caves and tunnels, being a true example of well-preserved nature in the Portuguese coast.
It is located in the parish of Colares (more specifically in the little town of Almoçageme), in the municipality of Sintra, was included in June 2023 in a list of the 20 most beautiful beaches in the world, by a publication called AFAR, which specializes in travel: https://www.afar.com/magazine/the-20-best-beaches-in-the-world
The beach is located among Sintra's other remarkable beaches, such as Praia da Ursa and Praia Grande do Rodízio, with the small Praia do Cavalo right next door, accessible when the tide is low.