And we europeans consider them young. What we are pointing is that people in US (and America in general) talks about pre-1776 stuff as they were prehistoric, and pre-1900 stuff as they were comparable to Roman ruins. Add to that that we love to bomb each other to a ruble, and buildings and countries younger than 200 years are viewed as temporary stuff. Nothing pedantic or snobby here, just pointing that we live in different scenarios that affected our views.