Anawangin Cove in Zambales is now being more popular, for mountaineers and non-mountaineers alike. You can go there just to experience a little bit of hiking (not very dangerous, but pure fun hehe), and to have a little picnic at the cove. Spell paradise! It's really a great site for camping, and if you want a lesser crowd, it is advisable to visit the place during weekdays.
It's like, "the BEACH".
You may also want to visit the Capones Island (and its light house),the alluring Pundakit Falls, and the Camara Islands.