Belgrade

Here's an ideal itinerary for 4 days in Belgrade:

Day 1:

• Start your day with a visit to the Kalemegdan Fortress, one of the most iconic landmarks in Belgrade. You can explore the fortress and enjoy the stunning views of the city from the top.
• After that, head to Skadarlija, a charming bohemian street filled with restaurants, cafes, and art galleries. You can have lunch at one of the traditional Serbian restaurants and enjoy the live music performances.
• In the afternoon, visit the Nikola Tesla Museum, dedicated to the famous Serbian inventor and scientist. You can learn about his life and work and see some of his inventions.
• End your day with a stroll along the Danube riverbank and enjoy the sunset.

Day 2:

• Start your day with a visit to the St. Sava Temple, one of the largest Orthodox churches in the world. You can admire the beautiful architecture and learn about the history of the church.
• After that, head to the Museum of Yugoslav History, where you can learn about the history of Yugoslavia and see some of the artifacts from that era.
• In the afternoon, visit the Ada Ciganlija, a popular recreational area with a lake, beaches, and sports facilities. You can rent a bike or a boat and enjoy the nature.
• End your day with a dinner at one of the trendy restaurants in the Savamala district, known for its street art and nightlife.

Day 3:

• Start your day with a visit to the Zemun district, located on the banks of the Danube river. You can explore the old town, visit the Zemun Market, and enjoy the views of the river.
• After that, head to the Museum of Contemporary Art, where you can see some of the most important works of Serbian and international artists.
• In the afternoon, visit the Belgrade Zoo, home to over 2000 animals from all over the world. You can see the white lions, tigers, and elephants.
• End your day with a visit to the Skadarlija district, where you can enjoy the nightlife and try some of the local drinks and snacks.

Day 4:

• Start your day with a visit to the National Museum of Serbia, where you can see some of the most important artifacts from Serbian history and culture.
• After that, head to the Republic Square, the central square of Belgrade, and visit the National Theatre and the National Museum.
• In the afternoon, visit the Belgrade Fortress, another iconic landmark of the city. You can explore the fortress and visit the Military Museum.
• End your day with a dinner at one of the restaurants in the Dorcol district, known for its trendy bars and restaurants.

I hope this itinerary helps you plan your trip to Belgrade!