A couple of years ago we toured around Ilocos Norte and we really enjoyed that time.
Not much to say about Laoag from the tourist perspective really, although there are a few interesting things to see. The surrounding area is also nice with interesting places.
Believe it or not, around the outskirts of Laoag, there's over 50 square miles of what seems like a never ending sand dunes of La Paz (Suba).
It's a famous area where loads of scenes from 'Born of the Fourth of July' and 'Mad Max' was filmed along with loads of local Filipino movies were filmed. Amazing places.

We quite like looking around churches, if you the same then I think you'll love the historical Paoay Church. It's well worth the visit.

There's loads of powder white sand beaches all around Pagudpud and again loads of other interesting places to visit. (don't expect Boracay style here!!)
There are some 'must visit places' with one of them being the truly beautiful and spectacular Kabigan Falls. It's almost in a really genuine rainforest.(probably the only one left in Philippines)
You can swim there if you like and in perfectly wonderful tranquility.

Fort Ilocandia Resort, is essential a five star hotel and casino. Bit (lot) expensive. Not that much to do really but plenty of unspoilt beaches around to explore.
The place was vitually empty when we visited, but we were told that quite often it's bustling with tourist, gamblers and high rollers. ( always bad news IMHO)

Further south in Ilocos Sur, you'll find beautiful Vigan. It's really quite an interesting and different place to visit especially the historical old town with it's very old style Spanish buildings and a good number of antique shops.

Batac is another must see place for the Marcos Mansion house and Mausoleum. This is where the alledged embalmed body of Ferdinand Marcos lies in state in an air-controlled glass case in a dark and somber room. All the visitors file past and have a glance at the body. Entrance is free.

If you have the time (and the interest) try a quick visit to Badoc Island. The surfing potential is great and totally unexpected, huge waves sometimes. The views are wonderful but sorry no hotels or bars, just self-picnic stuff. In fact there's nothing. Completely unihabited. Well it was when we were there.

Just an idea to think about.