The cylinders in the city of Ar

The city of Ar must have contained more than a hundred thousand cylinders, each ablaze with the lights of the Planting Feast. I did not question that Ar was the greatest city of all known Gor. It was a magnificent and beautiful city, a worthy setting for the jewel of empire, that awesome jewel that had proved so tempting to its Ubar, the all- conquering Marlenus.
Tarnsman

Steel projections that jut from cylinders
Boldly I dipped my tarn downward, into the midst of the cylinders, just another of the wild tarnsmen of Ar. I brought him to rest on one of the steel projections that occasionally jut forth from the cylinders and serve as tarn perches.
Tarnsman

"Give me whatever you think she is worth," he said, "and send the coins to the compartments of Clitus Vitellius, in the Towers of Warriors."
"Yes, Master," said the man at the table.
Slave Girl

We were but four bridges from the Towers of the Warriors when Clitus Vitellius turned suddenly, regarding me. I stopped, suddenly, naked, behind him, where I was heeling him. The virginal girl, too, stopped suddenly. But he did not look at her. He approached me. He stood before me, his shield on his left arm, the mighty spear grasped in his right hand. Immediately I trembled, and knelt, head down.
"Oh!" cried the virginal girl. He, placing the spear and shield to one side, had moved to her and was tying her hands behind her back. He fastened her by the wrists to a ring at the foot of the Four Lamps bridge. Such rings are common in Gorean cities, in public places, and serve the convenience of masters in tethering their slaves. The ring was mounted on a post, about a yard high. She stood at the post, naked, tethered there, her hands fastened behind her back, at the foot of the Four Lamps bridge.
Slave Girl

Within the city the Initiates, who had seized control shortly after the flight of Marlenus, would have already tapped the siege reservoirs and begun to ration the stores of the huge grain cylinders. A city such as Ar, properly commanded, might withstand a siege for a generation.
Tarnsman