Narrowest Street in the World (Guinness Book of Records)

According to the Guinness Book of Records, the narrowest street in the world is located in Reutlingen, Germany. In reality, it's just a passageway, an exit from a rear courtyard. In the eighteenth century, this district was completely destroyed in a huge fire. To ensure that, in future, fires couldn't spread so easily from house to house, a narrow space was left between them. Measuring just 31cm in width, it quickly went into the record books as the narrowest street in the world, even though it isn't much of a street.