Regensburg, Germany’s medieval gem, will transport you to a bygone era. The site of both Celtic and Roman settlements, Regensburg flourished in the Middle Ages.
Delphi is an iconic historical site and was once the sacred precinct of classical Greece, due to its role in Greek myth as the seat of a prophetic oracle.
Washington D.C. is the capital of the United States and home to some of the country's most iconic landmarks and monuments, including the White House, the Washington Monument, the Lincoln Memorial, the Smithsonian National Museum of Natural History, and the Capitol Building.