I grew up in So Cal where the oldest structure was San Juan Capistrano. Visiting the east coast I found buildings built in the 1600's. Yet it Europe a building isn't 'old' unless it was built earlier than 1000 AD.
Today we feel like a building is ready to be torn down and replaced if it's 50 - 100 years old. And most things we own are essentially disposable. What a difference in perception!
Yes, it is so great to see such old structures and learn the ancient history.