Vienna in one day:

1. **Morning: Historic Center**

- Start at St. Stephen's Cathedral and climb the tower for a panoramic view.

- Explore Graben and Kohlmarkt, famous shopping streets.

2. **Late Morning: Hofburg Palace**

- Visit the Hofburg Imperial Palace and its museums.

- Walk through Heldenplatz and admire the architecture.

3. **Lunch: Naschmarkt**

- Head to Naschmarkt for a diverse selection of food and local specialties.

4. **Afternoon: Belvedere Palace**

- Visit the Belvedere Palace and its beautiful gardens.

- Explore the Upper and Lower Belvedere for art collections.

5. **Late Afternoon: Schönbrunn Palace**

- Take a stroll in the gardens of Schönbrunn Palace.

- Optionally, explore the palace interiors or the zoo.

6. **Evening: Prater Park**

- Visit the Prater Park, home to the iconic Giant Ferris Wheel.

- Enjoy dinner at a traditional Viennese restaurant.

Remember to check opening hours and plan your route efficiently. Vienna offers a rich cultural experience, so adjust based on your interests!