The lighthouse was built in such a fashion that it used to emit signal to the ships every 7 minutes, which was later timed to 30 seconds. It is four storied conical shaped building which happened to be largest in Asia in Olden times.
The lower deck consisted of a fortress with berthing facility for ships and a Watch tower stretching upto to the Arabian Sea. Currently the beach and the lower deck belongs to Taj group of hotels which has built a heritage property with a swimming pool and luxurious rooms for tourists to stay comfortably.
Aguada too seems to have been chiselled out of a hillock and built with laterite stones which was naturally occurring on the landscaped. The local masonaries were used who were adapt at construction, with the architecture planned by the Portuguese.
Just a few meters away from the Aguada fortress exists a Church with statue of Jesus in a redeemer fashion beckoning the disciples to come into his fold. This Church has an excellent view point to give a panoramic view of the Aguada fortress and its hillock. Below one can find the prisoners barracks, which is used even today as a Central prison. The prison is heavily guarded, and tourists are not permitted to enter the premise. Many a tourist are carried away by the notice board which mentions only Tuesday and Friday entry is allowed outside the prison gate.