Visit the famous Schönbrunn Palace, former summer residence of the Habsburgs, and explore the gardens and zoo.
Take a stroll along the Danube River and visit Fisherman's Bastion, a 19th-century fortress with panoramic views of the city.
Explore the Hungarian Parliament Building, one of the largest parliament buildings in the world, and admire its neo-gothic architecture.
Visit Wawel Castle, a former residence of Polish monarchs, and its magnificent cathedral. Then, head to the Main Market Square to see the Cloth Hall and St. Mary's Basilica.
Take a sobering tour of Auschwitz-Birkenau Memorial and Museum, a former Nazi concentration camp, and pay tribute to the victims.
Visit the Royal Castle, which was destroyed during WWII and reconstructed in the 1970s, and learn about its history. Then, walk along the Royal Route to see other landmarks, such as St. Anne's Church and the Presidential Palace.
Take in the views from the observation deck of the Palace of Culture and Science, the tallest building in Poland, and catch a performance at the National Theatre.