The linked post's writeup is a bit too breezy to withstand a lot of scrutiny, alas. For instance, I'd guess that Varanasi can see a million tourists on a single festival weekend, not just annually. This Wikipedia page
has a longer and more credible list.
The 10 oldest cities which are still inhabited. Includes a few you've probably heard of (Damascus, Jericho, Jerusalem) and a couple of surprises.