If you live in Utrecht and you use Twitter, I highly recommend following WaarInUtrecht, which hosts a regular photo quiz game. The game is simple: the host posts a photo of a spot somewhere in Utrecht, and contestants DM their guess for a chance to win a prize. The prizes change regularly. Right now, in preparation for the Smartlappen Festival this weekend, they've been giving away prizes such as drinks or dinner from some of the participating cafés and restaurants. Yours truly won drinks at Oudaen! The game is a fun way to test your knowledge of the sites of Utrecht, especially the less obvious landmarks.

Another way to play the game is to buy the annual calendar. The calendar has a different photo each week for you to guess. You can tweet or e-mail your answer. The 2012 calendar has recently gone on sale at locations around the city, including the VVV offices at the Domplein. You can find an ever-growing list of places to buy the calendar on the Waar in Utrecht website, or you can buy the calendar directly through the site. The proceeds of the calendar sale go to support a charity each year. This year, they're helping Jarige Job Utrecht, which puts together a birthday party box for children between 4 and 12, whose parents depend on the Food Bank. For every two calendars sold, a gift is bought for the birthday boxes.