Questions pondered at 6500 feet

Jay Honeck wrote:
1. Airports were originally huge grass fields that allowed arrivals and
departures in any direction, on any heading. Are there any airports left
that provide 360 degrees of access?

I picked up a friend at Grosse Ile (ONZ) the other day. It's at the
southern end of an island (obviously?) where the Detroit River empties
into Lake Erie. Oh, here's a link:

http://www.grosseileairport.com/

That big circle in the middle is a PAVED 3000ft circular landing area.
It's also obvious that this airport was also a seaplane port.

No, it's no longer usable, but it's a cool bit of local history that
you can look at when you're in the pattern.