Here are some links to some of the places I have been on Oahu:
Cathedral of Our Lady of Peace
Diamond Head State Monument
Nuuanu State Park/Pali Lookout
Parish of St. Augustine By the Sea
Waimea Valley Audubon Center
I wasn't able to find official links to everywhere I've been so you might also check out www.hawaiiweb.com. I used this site to find information on some of the places I've been.