It was located not far from where the Pasig River meets the Lake of Ba-i and is presumed to be the present site of the municipality of Cainta, Rizal.

[3] Descriptions of early chroniclers say that the polity was surrounded by bamboo thickets, defended by a log wall, stone bulwarks, and several lantakas, and that an arm of the Pasig River flowed through the middle of the city, dividing it into two settlements.

[3] As described in an anonymous 1572 account documented in Volume 3 of Blair and Robertson's compiled translations:[3] This said village had about a thousand inhabitants, and was surrounded by very tall and very dense bamboo thickets, and fortified with a wall and a few small culverins.

[3] In August 1571, Legazpi assigned his nephew, Juan de Salcedo, to "pacify" Cainta.

After traveling several days upriver, Salcedo laid siege to the city and eventually found a weak spot on the wall.