The old town began to display a clear structure with three north–south axis identifiable: in the west the Kornmarkt ran between Bockenheimer Gate (to the church later erected and named Katharinenpforte) and Leonhardstor (tower) next to Leonhardskirche (church) on the Main. In the middle of the district Neue Kräme connected the two largest squares of the Altstadt, Liebfrauenberg to Römerberg and further towards the south lying Fahrtor on the bank of the Main and the harbour there. The Fahrgasse ran east of the cathedral from Bornheimer Gate near today's Konstablerwache to the Main bridge. It was one of the most busy streets for Frankfurt traffic in the 20th century.