Article continues below advertisementHotel Adlon Kempinski isn't your average luxury stay - it's a timeless Berlin icon with a fascinating history.From Michael Jackson's infamous balcony moment to Queen Elizabeth's II quiet stay in a suite renamed in her honor, few hotels have seen history unfold quite like this one.OK! was granted exclusive access inside one of Europe's most iconic hotels - Hotel Adlon Kempinski in Berlin - a place where royalty, presidents, and some of the world's most famous faces have checked in, dined, and disappeared behind closed doors.