Found the Apple Store. Fast internet!
Mak Vienna was a great modern museum. Fun to visit.
The subway system was very easy to navigate. We paid for a 24-hour ticket which let us get on and off as much as we wanted.
You pay for the ticket, and the first time you use it, you get it validated with a time stamp in a blue box. From then on, it's the honor system to get on and off the trains. You might be randomly checked to see if you have a valid ticket. It's a very nice system.
