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.
1842, before the city was incorporated. A house. First big building I know of was built in 1888.
St. Augustine has buildings from around 1700, those would be the oldest in my state.
I remember going to London and being amazed by the old buildings, most of what is around here is from the 1920s or newer.