Visitors wanting to see the Pearl Harbor historic sites now have the option of spreading their visit over two days with the new "Passport to Pearl Harbor."

A partnership of memorials and museums has launched the new way to access the primary Pearl Harbor historic sites. At $65 per adult and $35 per child, the two-day pass enables visitors to take in sites that are difficult, if not impossible, to fully absorb in one day. If purchased separately, adult admission to the sites costs $115.

The pass need not be used on consecutive days, but can be used within seven days of the initial visit. Photo identification must be presented with the nontransferable vouchers.

The "Passport to Pearl Harbor" includes the Official Pearl Harbor Audio Tour; the USS Bowfin Submarine Museum and Park as well as the submarine audio tour; the Pacific Aviation Museum; and the Battleship Missouri Memorial; and a choice between four tours.

The Pearl Harbor Historic Sites "are a unique collection of iconic museums, memorials and exhibits that, for many visitors to Hawaii, offer a truly once-in-a-lifetime experience," said Michael Carr, president and chief operating officer of the Battleship Missouri Memorial. "With the new Passport to Pearl Harbor, they can now be sure to visit all that Pearl Harbor has to offer at their own pace, allowing even more immersion into this important historic destination."

The passports are available only at the Pearl Harbor Visitors Center ticket window.

Upgraded tour options at the Battleship Missouri Memorial and Pacific Aviation Museum are available for an additional fee.