Vienna is a beautiful city with so much to see and do. Here's an ideal itinerary for 4 days in Vienna:

Day 1:

Start your day by visiting the iconic Schönbrunn Palace, which was once the summer residence of the Habsburg monarchs. You can take a guided tour of the palace or explore the gardens on your own. After that, head to the Naschmarkt, Vienna's largest outdoor market, where you can find everything from fresh produce to souvenirs. In the evening, catch a performance at the Vienna State Opera, one of the most prestigious opera houses in the world.

Day 2:

Begin your day by exploring the historic center of Vienna, which is a UNESCO World Heritage Site. Visit St. Stephen's Cathedral, the Hofburg Palace, and the Spanish Riding School. Then, head to the Kunsthistorisches Museum, which houses an impressive collection of art and artifacts from around the world. In the evening, enjoy a traditional Viennese dinner at a local restaurant.

Day 3:

Take a day trip to the Wachau Valley, a picturesque region along the Danube River known for its vineyards and charming villages. You can take a boat tour of the river, visit the Melk Abbey, and sample some of the local wines. In the evening, return to Vienna and relax at one of the city's many cafes.

Day 4:

Spend your final day in Vienna exploring the city's cultural offerings. Visit the Belvedere Palace, which houses an impressive collection of Austrian art, including works by Gustav Klimt. Then, head to the MuseumsQuartier, a complex of museums and galleries that showcases contemporary art and culture. In the evening, enjoy a farewell dinner at a local restaurant before departing Vienna.

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