Itinerary for 8 day trip to Austria

Here's a suggested itinerary for 8 days in Austria, taking into account your constraints:

Day 1: Arrival in Vienna

Check into your hotel and take some time to rest and freshen up
In the afternoon, explore the city's historic center, including St. Stephen's Cathedral, Hofburg Palace, and the State Opera House
In the evening, enjoy a traditional Viennese dinner at a local restaurant

Day 2: Vienna

Start your day with a visit to , the former summer residence of the Habsburgs
In the afternoon, visit the , which houses an impressive collection of Austrian art, including works by Gustav Klimt
In the evening, take in a performance at the Vienna State Opera House

Day 3: Salzburg

Take a train to Salzburg, the birthplace of Mozart and a UNESCO World Heritage Site
Visit the Hohensalzburg Fortress, which offers stunning views of the city and the surrounding mountains
Explore the historic Old Town, including the Mirabell Palace and Gardens and the
In the evening, attend a classical music concert or opera performance

Day 4: Salzburg

Take a day trip to the nearby town of Berchtesgaden, located in the Bavarian Alps
Visit the Eagle's Nest, a former Nazi retreat that now offers panoramic views of the surrounding mountains
Explore the town's historic center and enjoy a traditional Bavarian lunch at a local restaurant

Day 5: Innisburg

Take a train to Innsbruck, the capital of the Tyrol region
Visit the Golden Roof, a landmark building in the city's historic center
Take a cable car up to the Nordkette mountain range for stunning views of the surrounding Alps
In the evening, enjoy a traditional Tyrolean dinner at a local restaurant

Day 6: Olpererhütte

Take a bus or taxi to the village of Garz, located in the Zillertal Alps
Hike to the Olpererhütte, a mountain hut located at an altitude of 2,389 meters
Enjoy stunning views of the surrounding mountains and valleys, and spend the night at the hut

Day 7: Olpererhütte

Spend the day hiking in the Zillertal Alps, exploring the area's glaciers, lakes, and waterfalls
Return to the Olpererhütte for another night

Day 8: Departure

Take a bus or taxi back to Garz, and then a train back to Vienna
Depart Austria, taking with you memories of stunning mountain landscapes, historic cities, and delicious cuisine.

I hope this itinerary gives you a good idea of what you can do in Austria in 8 days, while still taking into account your constraints. Let me know if you have any questions or if there's anything else I can help you with!