I have been to Honolulu and the island of Oahu a handful of times and each time I visit, I try find something different to see. While most tourists will venture out to the Pearl Harbor and Waikiki Beach, there are some hidden treasures that arent always visited.
For first time visitors, I think its important to make time to visit the USS Arizona Memorial at Pearl Harbor. Granted its the most popular tourist destination in the island but its the most significant area on Oahu in terms of American history.
Waikiki Beach is arguably the best and most popular beach in the world and there is no question why. From the white sandy beaches, the moderate temperature of the ocean water and the stunning background of Diamond Head, if you are in the Honolulu/Waikiki area, you will no doubt have a chance to at least get a glimpse of the scenic beauty of the beach. My one and only experience surfing was performed right at the main beach area and am proud to say that I was able to stand and ride almost all the way to the shore on my 2nd attempt!
Also in the Honolulu/Waikiki area, I enjoy visiting Hanauma Bay, known for its great snorkeling, the International Market Place and the Iolani Palace. But one of the best places to go for the best panoramic view of the city is at the very top of Diamond Head. It doesnt appear to be free any longer but at just $1 for pedestrians, it is one of the best bargains you can find. The hike up to the top is about one mile, but it can be difficult so I wouldnt try to make that hike unless you are in good physical condition.
Honolulu is Hawaii's largest city. Home to not only a major international airport but also major military installations, it is a global trade and business center serving as a bridge between the Americas and Asia. It's also home to a pretty awesome beach. Waikiki is everything that one would expect--it's long, white, and beautiful. And, yes, you can surf there. The main strip provides its fair share of Honolulu restaurants, shopping and nightlife. I've traveled to Honolulu countless times for pleasure and business and have always enjoyed myself and strongly believe that any trip to Hawaii would be incomplete without a stop in Honolulu.
That being said, Honolulu is a big city and has big city problems. Outside of the touristy areas, it can get rough and ugly. Traffic can be extremely bad, with the freeway moving at a snail's pace almost all day, and the streets can be tight. Many of the hotels are older and in need of renovation, as well. All of this can be forgotten when one sits at a beachside bar or restaurant at the Royal Hawaiian and watch the surf while drinking a mai tai from a hollowed-out pineapple.