There is nothing I like more than cycling through the Maastunnel. The steep escalator you have to take is unique in the world. The Maastunnel was built during the Second World War. Completing this enormous project during such a wretched time is typical of the people of Rotterdam. On that escalator, you can see photos of the creation of the tunnel. Make sure you turn your handlebars sideways, otherwise you will bounce down to the bottom. And the best part is… It takes you to Zuid.