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.
A church built in the 9th century, still in use today. Underground: Walls from the Roman empire, 2000 years or older. Dig deeper and you’ll find remnants of the stone age. Germany.