Walk through the beautiful city of Prague and take in the sights while making your way to the river which surrounds the city. Be sure to stop by the Black Light Theater while you await your ferry ride. Once the sun begins to set find the nearest ferry (there are many) and pay the small admission price (around $3). Once upon the boat make your way upstairs to the very top and take in the sights, the castle and churches are the most beautiful when viewed at night as they are lit up by hundreds of lights.