Christmas Markets in Vienna are great. Buy some mulled wine (Gluhwein in German)which is served hot and is quite spicy. The mug it comes in is yours to keep - a great souvenir -but if you don't want it return it and get your €2 deposit back (Pfand).

Mike Contiki Article on Vienna

The Plaka district is awesome make sure to set aside several hours for shopping and bargaining.

MJ Article on Athens

Itter was one of the nicest town's I've ever been in, absolutely gorgeous. It's a sleepy town, but on Contiki you bring your own nightlife. This was one stop I wont forget.

cdm115 Article on Itter