Waikiki is the top visitor destination in Hawaii. Ninety percent of all of the hotels on O'ahu are located along this shore. Waikiki is best known for its beaches but it is also host to award winning restaurants, world-class shopping, and top island entertainment.Waikiki is a 0.7-mile manmade peninsula that encompasses 450 acres of vacation paradise. At the beginning of the 20th Century, Waikiki was mainly swampland, fishponds, and duck ponds. After the completion of the Ali Wai Canal, Waikiki was turned into prime island real estate.