To those from the Western hemisphere, it’s always fascinating to hear that some homes and businesses from the times of the Greek philosophers still have inhabitants, and then you remember that the Western hemisphere is itself not without its own examples, for example some Mexican villages still have temples from the times of the Mayans.
This lighthouse is the oldest building in my city (Hamburg, Germany). It was completed 714 years ago. I actually had to look it up, I was kind of expecting the oldest building to be older than that.