So, in the morning, Angel was not very familiar with Vienna. We got off the plane, and left the luggage at the hostel near the Westbahnhof, then she said she would like to visit The Vienna Boys' Choir's (Die Wiener Sängerknaben) palace, which is called Augartenpalais. This is the sign we see before we enter.
The palace is really empty, we only see the white building. And the park is currently being fixed. Nothing really special, so Angel decided to take the U-Bahn to Karlsplatz.