Pompeii

It's difficult, as an American, to grasp the length of 2,000 years. Where I come from, 200 years is old, and if you find something that's from 500 years ago, it's close to the oldest thing around. Then I come here, to Pompeii, and the entire city is over two millennia old. And yet, here are the remnants of a civilization - with baths, theaters, amphitheaters, shops, houses, sculptors, and artists. It's a strange feeling of sameness and difference at the same time, compared to civilizations of today.

And yes, there are many dogs still here, just as there were back then. The phrase "cave canem" still applies.