Yesterday morning we woke early so we could be the first to arrive at Benagil Sea Cave, a 45-minute drive from our Airbnb in Luz.  This sea cave has a naturally occurring oculus overhead of its own secluded beach.  We read the beach gets busy later in the day when lots of boats and people try to visit; however, if you arrive early you can have the place practically to yourself.   It does require about a 10 minute swim to get into the cave and unfortunately the morning we went had some really high and rough swells.  Since we do not have a death wish, we were unable to do the swim.  I'm hoping we can try again another time!!  Luckily, we will be in this region for about 3 weeks so fingers crossed we can find a day without crazy waves!