Bossa Beach, also known as São João do Estoril, is a popular little beach at the beginning of the Estoril-Cascais coast, and as with all beaches along this stretch, the beach has a wide boardwalk lined with a number of great restaurants and cafes. Bossa is a sandy beach, although the shoreline is somewhat rocky, and while this means that kayaking here may not be ideal, it also means that there are plenty of rocks to explore.