For a great view of the city (especially at night) go to the top of the Eiffel Tower at Paris. It also offers a great vantage point for viewing the water show at the Bellagio.

cdm115 Article on Las Vegas Casinos

Cafe lattes, bruchetta, chianti, gnochi, limoncella, baci chocolates, gelati, pizza, it's impossible to not try everything in Italy.

Krista Article on Italian Food and Drink

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