Yes, the walls of Ar were rebuilt.
This is mentioned several times but here are a couple:
"The walls of Ar," I said, "are doubtless being rebuilt."
I must not make my serious concerns too obvious.
"With soaring hearts and singing," said a fellow.
"And the flute girls who so tormented and mocked the earlier dismantlers of the walls?" I asked.
"Collared, naked, sweating, under the lash," said a fellow, "they now struggle to bear stones to the builders."
Swordsmen of Gor    Book 29    Page 118
"Obviously the walls have been rebuilt," said Xenon.
"And higher and stronger than before," said Seremides.
We had arrived in the vicinity of Ar two days ago.
Warriors of Gor    Book 37    Page 160
