One of the things I like about Dutch cities is the way they use a variety of lights to add to the overall appeal. You can make the most of cheap holidays by simply wandering the streets of any decent-size Dutch city — Amsterdam, Utrecht, Gouda, Delft — soaking up the sights and the sounds. Many of the canal bridges throughout the country often have special lighting of some sort, turning a simple walk through town into a fantastic light show, as you can see in this photo of one of the many Amsterdam canal bridges. Of course, Utrecht has taken it all to new levels with the Trajectum Lumen light art display. Every night, you can enjoy everything from simple blue lights under the canal bridges to high-tech digital light displays in hidden canal nooks.