Candaba Bird Sanctuary is nice to see for those who really wanted to be in nature.I can say that the place is an attraction in Baliuag.One of the best spot in the hometown of Baliuag aside from their Church.
To make the most of Candaba it is best to be a 'birder' and to be prepared. There are some blogs of non-birders who have enjoyed it but ... It is not a developed wetland as some might have experienced in other countries with hides, etc. but rather a collection of ponds and marshes among the rice fields.
The sancturary is full of migratory brids, and is fun to watch and count the species. Bring a telescope or long camera lens as its hard to see the birds. No food there, so bring your own food and water