There was only one gateway into the city, and this gateway was guarded by strong iron doors.
Just behind the doors lived a gatekeeper, who did nothing but open and shut the gates.
He watched them well.
No one could come in who was not friendly to the city.
The gates were not opened very often. Some days they were not opened at all. So the gatekeeper had much spare time.
"I am very fond of honey," thought he. "I think I will buy a few hives of bees. I can place the hives on the top of the wall. There nobody will trouble them."
Soon there were rows of beehives on the top of the wall over the gate.
It happened that, not far away, there was another walled city, named Lintz.
The people of Lintz were the enemies of the people of Andernach.
They were always watching each other, and fought when they could get a chance.