Transport in Cologne have legal rights to dig in all future building sites within the medieval city limits before all heavy construction machinery. Currently the average cruising speed is 26.6 kilometers per hour (2006). The Rhine-Ruhr S-Bahn has 5 lines which cross Cologne.The S13/S19 runs 24/7 between Cologne Hbf and Cologne/Bonn Flaughafen. Cologne Ports (HGK) is one of the largest operators for inland ports in Germany. Ports include Deutz, Godorf, Mülheim and Niehl I and II. The name of Cologne's international Airport is Konrad-Adenauer-Flughafen. It is shared with the neighbouring city of Bonn (Cologne/Bonn Region). It's the sixth largest airport in Germany while
Historical Archive of the City of Cologne so-called White Book ("Weißes Buch"), a book of copies of charters and privileges. By 1370 the archives were located in the "Haus zur Stessen". In medieval Cologne, valuable goods and important trade documents were frequently stored in vaulted warehouses specially built in backyards. This method of storage was used by both business owners and the municipal administration. Documents included grants of privileges, contracts, records of lawsuits, maps, seals and documents from the estates of important persons. As the city and its national and international trade thrived and prospered, the municipal administration began to plan further storage to house the growing