Old is such a relative thing.
Where I grew up, in the British Columbia Interior, an old building is one that dates from between 1860 and 1900.
In the San Francisco Bay Area, you might see some buildings from the 1840s, maybe some Spanish ones that are older.
In Massachussetts/New England, there are some buildings that date from the 1620-1640.
In the UK, the new church in a village may have been constructed in 1610, to replace the one built in 1078.
In Cairo or Jerusalem, people don’t blink when you say that you live in a house built in 948 AD.
Old is so relative…and so fleeting.