Least Gate
Least Gate is the city gate which stands nearest due Hubwards on the city walls. While the destination is not marked on The Streets of Ankh-Morpork and the scale of The Discworld Mapp makes it unclear, it would appear to be the road to Sto Helit and Sto Kerrig. It opens out into Pallant Street, which appears to follow the lowest contour of the valley between the Tump and Nap Hill.
The illustration on pp2-3 of Book: The World of Poo purports to be of the approach to the City from outside via the Least Gate. However, the artwork is somewhat idealised and has cabbage fields (and atendent rabbits) growing suspiciously close to the city walls, where the reality is most likely to be an overspill suburb from an overcrowded City. The skyline of the City should also be seen to rise to left and right of the Gate, to the Tump and Nap hill respectively..