Moscow

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

Day 1:

• Start your day with a visit to the iconic Red Square, which is home to some of Moscow's most famous landmarks, including St. Basil's Cathedral and the Kremlin.
• Take a tour of the Kremlin, which is a fortified complex that houses the official residence of the President of Russia. You can also visit the Armoury Chamber, which is home to a vast collection of royal treasures, including Faberge eggs and imperial carriages.
• After lunch, head to the Bolshoi Theatre, which is one of the world's most famous opera and ballet houses. You can take a tour of the theatre or catch a performance if there's one scheduled.
• End your day with a visit to GUM, which is a historic shopping mall located on Red Square. It's a great place to shop for souvenirs or enjoy a cup of coffee while people-watching.

Day 2:

• Start your day with a visit to the Moscow Metro, which is one of the most beautiful subway systems in the world. Take a ride on the Circle Line and admire the stunning architecture and artwork in the stations.
• After the metro ride, head to the Tretyakov Gallery, which is home to the world's largest collection of Russian art. You can spend hours admiring the paintings and sculptures on display.
• After lunch, head to the Moscow State University, which is one of the most prestigious universities in Russia. You can take a tour of the campus and enjoy the stunning views of the city from the observation deck.
• End your day with a visit to the Moscow City skyscraper complex, which is a modern business district located on the banks of the Moskva River. You can enjoy a drink at one of the rooftop bars and admire the panoramic views of the city.

Day 3:

• Start your day with a visit to the Cathedral of Christ the Saviour, which is the largest Orthodox church in Russia. You can take a tour of the cathedral and admire the stunning frescoes and mosaics.
• After the cathedral, head to the Pushkin Museum of Fine Arts, which is one of the largest art museums in Russia. You can admire the vast collection of European art, including works by Rembrandt, Rubens, and Van Gogh.
• After lunch, head to the Moscow Zoo, which is home to over 8,000 animals from around the world. You can spend hours exploring the different exhibits and learning about the animals.
• End your day with a visit to the Moscow River, which is a great place to take a boat tour and admire the city from a different perspective.

Day 4:

• Start your day with a visit to the Izmailovsky Market, which is a great place to shop for souvenirs and traditional Russian crafts. You can also enjoy a traditional Russian lunch at one of the many food stalls.
• After the market, head to the Novodevichy Convent, which is a UNESCO World Heritage Site and one of the most beautiful monasteries in Russia. You can take a tour of the convent and admire the stunning architecture and artwork.
• After lunch, head to the VDNKh, which is a huge park and exhibition center that showcases the achievements of Soviet industry and agriculture. You can explore the different pavilions and enjoy the beautiful gardens.
• End your day with a visit to the Moscow Circus, which is one of the oldest circuses in Russia. You can enjoy a performance by some of the world's best acrobats and clowns.