If your trip to Phnom Penh is all locked in but your travel itinerary is a little on the empty side, let us give you a helping hand.A scan of a postcard stand will tell you that a visit to Phnom Penh is not complete without going to Royal Palace. As the most iconic attraction in the area, you might want to schedule more time here than a brief stop.You'll need to wake up early if you're planning to check out all the interesting attractions that this place has to offer. Independence Monument and Silver Pagoda are non-negotiable. National Museum of Cambodia and Wat Phnom can't be missed either.Plan a stop at NagaWorld Casino. It's one sight you'll find on travelers' to-do lists. Olympic Stadium and Phnom Penh Night Market are also not far away and worth a detour.