Want to get to know the historical city of Utrecht in two and a half hours? Cruise the city with these funny, enthusiastic locals and discover this vibrant, centuries old city including many places that you would probably miss on your own. You can either come as a group or join an existing one. Colorbike Tours offers four different bicycle tours, all of which begin and end at the same location: Zeedijk 6. And while cycling through Utrecht you'll be contributing to a better future for a child in a developing country as 15% of its proceeds help to buy bikes for children in Colorbike projects in Africa and Latin America.