The Church Of Tanay is dedicated to San Ildefonso. It is located in the Centre of Town. In front of the Centuries Old Church is a Century Old Acacia Tree, beside it is a Sculpture made from the Remnants of the partner of the Acacia Tree. The sculpture was made by sculptors from Laguna.

The Church Boasts of a beautiful retable with an image of San Ildefonso. Aside from the retablo it also boasts of Century Old Relleves which are now covered in glass. A must Visit if you are in Tanay.