"They passed the Drawbridge, and entered the town;"
Plaque at the Landport Gate
Creative Commons Attribution Share AlikePlaque at the Landport Gate - Credit: Basher Eyre

 Because of Portsmouth's  strategic position in the English Channel and its naval connections, it became a heavily fortified town, and the old town was walled for a large part of its history. Between 1760 and 1875, the main entrance to the town was via the Landport Gate which was preceded by a moat and drawbridge.