They say you can’t stop time. Prague is intricate and theatrical Astronomical Clock, striking every hour for the past 600 years, is ticking proof. Yet when you travel to the “City of a Hundred Spires” as well as the beguiling cities of Berlin, Warsaw, Krakow, Budapest, and Vienna on this six-country tour of Eastern Europe, it can also feel like time has stood still. Centuries-old palaces, castles, and cathedrals transport you to another era, as do beautifully reconstructed war-damaged cities. Tracing the steps of kings, queens, emperors, presidents, generals, soldiers, and prisoners, history buffs will relish revisiting the most gripping chapters of the past. In addition, with a whole day at leisure in harmonious Vienna and a private Chopin concert in the maestro’s hometown of architecturally alluring Warsaw, music lovers will be equally elated.