Things to do in Cidade Velha

This is an abandoned lighthouse, which was under repair when we went there. It is located on the Atlantic Ocean, and looks beautiful from a distance, but not so-so up close. When we approached, a black friend came out and asked us in English if we wanted to go inside. We saw that it was under construction and there was no one guarding the gate, so we thought it would be good to go in and take a look. But the other party wanted to charge 5 euros per person. We didn't have any cash and there was no electronic payment, so we didn't go in. We saw there were stairs, so we should be able to climb the tower.