ATHENS, Greece, 2013-04-25— /travelprnews.com/ — In April 1963, exactly 50 years ago, a landmark hotel opened its doors in Athens marking a new era of prosperity and development for the Greek tourism. The official inauguration of Hilton Athens, which took place on the 20th of April 1963 followed by a two-day celebration, attracted distinguished guests from all corners… Read the full press release