This summer we went to France. I couldn't bring my own bike so I was dependent on things available for hire. Our first stop was in Bourgoundy and the only thing available was this.
An (almost) cast iron Dutch Sparta. Originally these bikes are, like most simple Dutch bikes, single speeders. Not that much of a problem, as we have no hills. In my surroundings the steepest climb is about 30 meters up. France does have hills so the local mechanic had fitted some gears. Still it was hell of a job to go uphill. But did it really matter? No, the scenery you drive through is gorgeous. Pedalling through on anything is fun.