You can visit Old Goa like the Portuguese Viceroys, so first go to Viceroy`s Arch. Vasco da Gamas sculpture looks to the river.
The arch was built shortly after the conquest.  On the Rua Direita,leading from the arch to the centre, the traders had shops,they were selling jewels and Indian slaves to Portugal and african slaves were brought to Goa.  Late in 1869 the portuguese Kings forbade the slavery.

In the garden of St. Catejan Church stands a small gateway, the rest of Adil Shah`s palace, which was built on the foundation of a Hindu temple.  See the decoration.

Between St.Catejan and Se`-cathedral there was another palace.  It was the place of tribunal and inquisition. Shortly after the demand of Britain the Portuguese Administration closed this palace and destroyed it, as in the cellar they hid the bones of their victims.

St.Catejan Church : The Italian monks of  the Thiene built this church in Goa, after they could not convert the muslims of Golconda (1640). It is a replica of St.Peter in Rome.

Se`- Cathedral : built between 1562-1619. In the south tower you can see the golden bell : Queen of the East, which was used when a heathen was convicted. This was  convent of Dominican order.

Basilica Bom Jesus is a Jesuit basilica without white plastering. Franz Xavier "worked" here, his baptism arm is in Rome.
Mogulking Akbar knew about the inquisition and he did not allowe the Jesuits the missionary in his country as he heard about the pyres.
Keep it in mind,if you hear something about Francis Xavier.

You can continue your visit with the museum, where you can see sculptures of a plundered Hindu temple.

So last ST.Augustin: if you come from Panjim,you can see the 40 mtr.high Tower and is a signal of the decay. The rest collapsed 1931. Only the memorial slabs help you to imagine the dimension of this building.  Archaelogists are looking for the " Black Shrine " of a Georgian
queen.  On the sacred hill you can find more ruins and walls so you can imagine the reall dimension of Old Goa.