Jerusalem, The Parthenon, Thermopylae, Hadrian's Wall, Civitavecchia and so on .... but the oldest site I've ever spent time in was right here in SC doing volunteer work for Al Goodyear at the Topper site ... 50,000 years old. Predates Clovis, right down the road from me.
Best couple of weeks I ever spent ... learned a lot. Ending-up finding something on my property thanks-to what I learned volunteering on that dig.
https://www.sciencedaily.com/releases/2004/11/041118104010.htm
