Start your trip in the vibrant city of Berlin. In the morning, explore the historic Brandenburg Gate and take a stroll through the beautiful Tiergarten park. In the afternoon, visit the Berlin Wall Memorial and Museum to learn about the city's divided past. As the evening sets in, head to Potsdamer Platz and enjoy dinner at one of the family-friendly restaurants.
On your second day, take a flight or train to Munich. Start your morning by exploring the magnificent Nymphenburg Palace and its beautiful gardens. In the afternoon, visit the Deutsches Museum, one of the world's largest science and technology museums. In the evening, head to Marienplatz and witness the fascinating Glockenspiel show at the New Town Hall.
Travel to Cologne on your third day. Start your morning by visiting the iconic Cologne Cathedral, a UNESCO World Heritage site. Take a leisurely walk along the Rhine River promenade and enjoy the beautiful views. In the afternoon, visit the Chocolate Museum and indulge in some delicious treats. In the evening, explore the vibrant Belgian Quarter for shopping and dining.
On your final day, travel to Hamburg. Start your morning by exploring Miniatur Wunderland, the world's largest model railway exhibition. In the afternoon, visit HafenCity and take a boat tour of the historic Hamburg harbor. In the evening, head to St. Pauli and enjoy a fun-filled evening at the famous Spielbudenplatz.
For off the beaten path attractions and places loved by locals, consider visiting the beautiful Neuschwanstein Castle near Munich, which inspired Disney's Sleeping Beauty Castle. In Berlin, explore the family-friendly Legoland Discovery Centre and enjoy interactive Lego experiences. In Cologne, take a boat tour along the Rhine River to discover charming towns and vineyards. Lastly, in Hamburg, visit the Hamburg Dungeon for a unique and entertaining experience that brings history to life.