How to get center point for geometries_from_point()

[TakiGuan]

I check the boundary example and want to try some other cities, but I can't find how to calculate or get it from OpenStreetMap. Maybe someone knows if there is a quick way to get the center point. Thanks in advance.

[AdrianKriger]

@TakiGuan ---you'll want to select 'Where is this?' in the OpenStreetMap Search.