Just for the view it's worth the effort and its free. Yes take some form of photo ID, although they let us in without it. You get to the top of the first bak of lifts on the 43rd floor and have a view out to the north and west so can get your bearings of things like the old Governor's House,St John's Cathedral and botanic gardens, and across to Kowloon and Lantau Island. On a clear day you get a good view into the new territories. There's also a scale model of the building and surrounding area from before several of the obscuring high rise buildings had been thought of.
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