Home to Honolulu, Oahu also is the location of one of the most popular tourist spots, the Pearl Harbor Memorial. There are actually several sites to visit here: USS Arizona Memorial, Battleship Missouri Memorial and the USS Bowfin Submarine Museum. Honolulu is also where you find the family-friendly Waikiki Beach.
If you want to get back to nature, head to Maui, where you can trek through the rain forest, hike the famed Nakalele Coast or kayak in the bluest of waters. For the truly fit, consider hiking into the Haleakala Crater. There is also a rigorous, but stunning, six-hour rain forest/waterfall hike. You can do these on your own, of course, but it becomes a wonderful adventure with a company that makes all the arrangements, such as Maui Eco-Adventures.
Princeville Ranch Adventures offers several different trips combining hiking, waterfall swimming, kayaking and ziplining. If you are a serious hiker, go for the one-mile Kalalau Trail along the gorgeous Na Pali Coast. If you want thrills, there is a ziplining adventure where you go across several lines, walk a suspension bridge, then relax in tubes in a swimming hole.
If you travel to Hawaii, the Big Island, mid-November to May, consider a whale-watching cruise; this is the season when humpback whales ply the waters. Dolphin Discoveries (http://www.dolphindiscoveries.com) in Kona has whale and dolphin tours, plus snorkeling.
Molokai (http://www.molokai-hawaii.com/) gives you a glimpse into the Hawaii of old, with mostly empty--but beautiful--beaches, mountain biking, Kumu Farms, where you can taste varieties of papaya and banana, and the Big Wind Kite Factory, where you get a free tour and kite flying lesson.
