America's only royal residence was built in 1882 on the site of an earlier palace, and it contains the thrones of King Kalakaua and his successor (and sister) Queen Liliuokalani. Bucking the stereotype of the primitive islander, the palace had electricity and telephone lines installed even before the White House. Downstairs galleries showcase the royal jewelry, and kitchen and offices of the monarchy. The palace is open for guided or self-guided audio tours, and reservations are essential. If you're set on taking a guided tour, call for reservations a few days in advance. The gift shop was formerly the Iolani Barracks, built to house the Royal Guard.
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