If your trip to Warsaw is all locked in but your itinerary is a little on the empty side, we can give you a few hints and tips.If there's one thing that sums up Warsaw, it's Royal Castle. Make sure you snap loads of fabulous pictures standing in front of this famous attraction to show off to the folks when you return home.Experience the best that this city has to offer by adding Palace of Culture and Science and University of Warsaw to your travel schedule. If you've got an extra day handy, drop by Presidential Palace and Grand Theatre too.Stop by Old Town Market Place. It's one attraction you'll find on many travelers' to-do lists. If you still have space on that schedule, Warsaw Zoo and Copernicus Science Centre will keep you occupied as well.