Originally Posted by Sjoerd

Getting out of the airport is quick everywhere in Europe, especially within Schengen because you don't have to deal with immigration.

The question "what are the things I can do?" is a bit strange. You can sleep, eat, get drunk, walk around, visit museums, go to a supermarket, take public transport to another nearby town, etc., etc, etc. What are your interests? Are you a 80 year old grandmother in a wheelchair or a 22 year old triathlon athlete?