What are other attractions than Iolani Palace that are worth visiting in Honolulu?

The other must-see attractions in Honolulu are:<a href='/hawaii-kai-l147732/'>Hawaii Kai</a><a href='/waikiki-l141476/'>Waikiki</a><a href='/diamond-head-hawaii-l4516/'>Diamond Head, Hawaii</a><a href='/nuuanu-pali-lookout-l4523/'>Nuuanu Pali Lookout</a><a href='/daniel-k-inouye-international-airport-l147742/'>Daniel K. Inouye International Airport</a>

What are the most popular Iolani Palace tours and tickets?

The best Iolani Palace tours and tickets are:<a href='/hawaii-l85/honolulu-pearl-harbor-uss-arizona-and-city-tour-t401010/'>Honolulu: Pearl Harbor, USS Arizona, and City Tour</a><a href='/hawaii-l85/waikiki-trolley-hop-on-hop-off-1-4-or-7-day-all-line-pass-t159701/'>Waikiki Trolley Hop-on Hop-off 1, 4 or 7-Day All-Line Pass</a><a href='/hawaii-l85/honolulu-pearl-harbor-and-honolulu-city-tour-t398774/'>Honolulu: Pearl Harbor and Honolulu City Tour</a><a href='/hawaii-l85/oahu-honolulu-haunts-guided-ghost-tour-t395472/'>Oahu: Honolulu Haunts Guided Ghost Tour</a><a href='/hawaii-l85/oahu-go-city-all-inclusive-pass-with-40-experiences-t209640/'>Oahu: Go City All-Inclusive Pass with 40+ Experiences</a>