Kaliningrad, formerly known as Königsberg, is a fascinating city with a rich history and beautiful architecture. Here's an ideal itinerary for 7 days in Kaliningrad:

Day 1: Arrival and City Exploration

• Arrive in Kaliningrad and check into your accommodation.
• Start your exploration by visiting the iconic Königsberg Cathedral and the nearby Kant Island.
• Stroll along the picturesque Fish Village area and enjoy a seafood dinner at one of the local restaurants.

Day 2: World War II History

• Visit the Museum of the World Ocean to learn about maritime history and see the U-Boat B-413.
• Explore the Bunker Museum to delve into the city's World War II history.
• End the day with a visit to the Victory Square and the Monument to the Defenders of the Soviet Arctic during the Great Patriotic War.

Day 3: Curonian Spit

• Take a day trip to the Curonian Spit, a UNESCO World Heritage Site known for its stunning sand dunes and pristine beaches.
• Visit the Dancing Forest and the Efa Dune to witness the unique natural beauty of the area.
• Enjoy a relaxing evening by the Baltic Sea before heading back to Kaliningrad.

Day 4: Amber and Culture

• Explore the Amber Museum to learn about the history and significance of amber in the region.
• Visit the Kaliningrad Regional Museum of Fine Arts to admire a collection of Russian and European art.
• Spend the evening walking along the Upper Lake and enjoying the vibrant nightlife in the city center.

Day 5: Svetlogorsk and Yantarny

• Take a day trip to the charming seaside town of Svetlogorsk and relax on its sandy beaches.
• Visit the nearby town of Yantarny, known for its amber mines and picturesque coastal views.
• Enjoy a seafood lunch overlooking the Baltic Sea before returning to Kaliningrad.

Day 6: Kaliningrad Zoo and Shopping

• Spend the morning at the Kaliningrad Zoo, home to a variety of animals from around the world.
• Explore the local markets and shops to pick up souvenirs such as amber jewelry and Russian handicrafts.
• Relax in one of the city's parks or cafes in the evening and soak in the local atmosphere.

Day 7: Forts and Palaces

• Visit the Fort Number 5 Museum to learn about the city's military history and explore the underground tunnels.
• Explore the beautiful Rossgarten Gate and the nearby King's Gate.
• End your trip with a visit to the beautiful Dohna Tower and the nearby Kaliningrad Cathedral before departing.

I hope this itinerary gives you a good overview of what Kaliningrad has to offer. Enjoy your trip!